SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934



                       Helix Energy Solutions Group, Inc.
                         ------------------------------
                                (Name of Issuer)

                           COMMON STOCK (NO PAR VALUE)
                    -----------------------------------------
                         (Title of Class of Securities)

                                    42330P107
                                 --------------
                                 (CUSIP Number)

                                  July 6, 2007
                      ------------------------------------
                      (Date of Event Which Requires Filing
                               of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

      |_|   Rule 13d-1(b)

      |X|   Rule 13d-1(c)

      |_|   Rule 13d-1(d)

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act.

                         (Continued on following pages)

                              (Page 1 of 18 Pages)






-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 2 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Capital Management, LP ("TPG-Axon Management")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               5,500,000
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    5,500,000
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       5,500,000
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       OO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 3 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners GP, LP ("PartnersGP")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               1,834,996
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    1,834,996
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,834,996
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       2.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       PN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 4 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon GP, LLC ("GPLLC")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               5,500,000
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    5,500,000
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       5,500,000
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       PN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 5 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners, LP ("TPG-Axon Domestic")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               1,834,996
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    1,834,996
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,834,996
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       2.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       IA
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 6 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners (Offshore), Ltd. ("TPG-Axon Offshore")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       Cayman Islands
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               3,665,004
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    3,665,004
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       3,665,004
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       4.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       OO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 7 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       Dinakar Singh LLC ("Singh LLC")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       Delaware
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               5,500,000
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    5,500,000
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       5,500,000
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       OO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 8 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       Dinakar Singh ("Mr. Singh")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|

                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       USA
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER
       SHARES
                               0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

                               5,500,000
                       ---------------------------------------------------------
       OWNED BY        7       SOLE DISPOSITIVE POWER

       EACH
                               0
       REPORTING
                       ---------------------------------------------------------
       PERSON          8       SHARED DISPOSITIVE POWER

       WITH                    5,500,000
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       5,500,000
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.0%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       IN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                     Page 9 of 18 Pages
-------------------                                           ------------------

ITEM 1.

      (a) NAME OF ISSUER: Helix Energy Solutions Group, Inc.

      (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

            400 N. Sam Houston Parkway E. Suite 400
            Houston, Texas 77060

ITEM 2.

         2(a). NAME OF PERSON FILING:

         This statement is filed by the entities and persons listed below, all
of whom together are referred to herein as the "Reporting Persons":

         (i)  TPG-Axon Capital Management, LP ("TPG-Axon Management"), a
              Delaware limited partnership, with respect to the Shares
              reported in this Schedule 13G held by TPG-Axon Partners, LP
              ("TPG-Axon Domestic") and TPG-Axon Partners (Offshore), Ltd.
              ("TPG-Axon Offshore," and together with TPG-Axon Domestic the
              "Funds")

        (ii)  TPG-Axon Partners GP, LP ("PartnersGP"), a Delaware limited
              partnership which serves as the general partner of TPG-Axon
              Domestic, with respect to the Shares reported in this Schedule
              13G managed by TPG-Axon Management and held by TPG-Axon
              Domestic.

       (iii)  TPG-Axon GP, LLC ("GPLLC"), a Delaware limited liability
              company, which serves as the general partner of TPG-Axon
              Management and PartnersGP, with respect to the Shares reported
              in this Schedule 13G managed by TPG-Axon Management and held
              by the Funds.

        (iv)  TPG-Axon Domestic, a Delaware limited partnership, with respect
              to  the Shares reported in this Schedule 13G directly held
              by it.

         (v)  TPG-Axon Offshore, a Cayman Islands exempted company, with
              respect to the Shares reported in this Schedule 13G directly
              held by it.

        (vi)  Dinakar Singh LLC ("Singh LLC"), a Delaware limited liability
              company which serves as the managing member of GPLLC, with
              respect to the Shares reported in this Schedule 13G managed by
              TPG-Axon Management and held by the Funds.

       (vii)  Dinakar Singh ("Mr. Singh"), an individual who serves as the
              managing member of Singh LLC, with respect to the Shares
              reported in this Schedule 13G managed by TPG-Axon Management
              and held by the Funds.






-------------------                                           ------------------
CUSIP NO. 42330P107                   13G                    Page 10 of 18 Pages
-------------------                                           ------------------


        (b) ADDRESS OF PRINCIPAL OFFICE:

            (All, except TPG-Axon       TPG-Axon Offshore
            Offshore)

            888 Seventh Avenue          c/o Goldman Sachs (Cayman) Trust Limited
            38th Floor                  PO Box 896GT, Harbour Centre, 2nd Floor
            New York, New York 10019    George Town, Grand Cayman
                                        Cayman Islands, BWI

        (c) Citizenship: Delaware (all except TPG-Axon Offshore and Mr.
            Singh); TPG-Axon Offshore: Cayman Islands; Mr. Singh is a
            United States citizen.

        (d) Title of Class of Securities: Common Stock (NO PAR VALUE)

        (e) CUSIP Number: 42330P107

ITEM 3.   IF THIS STATEMENT IS FILED PURSUANT TO SS.SS.240.13D-1(B) OR
          240.13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A:

         (a) |_| Broker or dealer registered under section 15 of the Act (15
                 U.S.C. 78o).

         (b) |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

         (c) |_| Insurance company as defined in section 3(a)(19) of the Act
                 (15 U.S.C. 78c).

         (d) |_| Investment company registered under section 8 of the
                 Investment Company Act of 1940 (15 U.S.C. 80a-8).

         (e) |_| An investment adviser in accordance with
                 ss.240.13d-1(b)(1)(ii)(E).

         (f) |_| An employee benefit plan or endowment fund in accordance with
                 ss.240.13d-1(b)(1)(ii)(F).

         (g) |_| A parent holding company or control person in accordance with
                 ss.240.13d-1(b)(1)(ii)(G).

         (h) |_| A savings association as defined in Section 3(b) of the
                 Federal Deposit Insurance Act (12 U.S.C. 1813).

         (i) |_| A church plan that is excluded from the definition of an
                 investment company under section 3(c)(14) of the Investment
                 Company Act of 1940 (15 U.S.C. 80a-3).

         (j) |_| Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).

         IF THIS STATEMENT IS FILED PURSUANT TO Rule 13d-1(c), CHECK THIS
         BOX [X]





-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 11 of 18 Pages
-------------------                                          -------------------

ITEM 4. OWNERSHIP

         TPG-Axon Management, as investment manager to TPG-Axon Domestic and
TPG-Axon Offshore, has the power to direct the disposition and voting of the
Shares held by TPG-Axon Domestic and TPG-Axon Offshore. PartnersGP is the
general partner of TPG-Axon Domestic. GPLLC is the general partner of PartnersGP
and TPG-Axon Management. Singh LLC is a Managing Member of GPLLC. Mr. Singh, an
individual, is the Managing Member of Singh LLC and in such capacity may be
deemed to control Singh LLC, GPLLC and TPG-Axon Management, and therefore may be
deemed the beneficial owner of the securities held by TPG-Axon Domestic and
TPG-Axon Offshore. Mr. Singh and Eric Mandelblatt ("Mr. Mandelblatt") are
Co-Chief Executive Officers of TPG-Axon Management.

         Each of Singh LLC, GPLLC, PartnersGP, Mr. Singh and Mr. Mandelblatt
disclaims beneficial ownership of all of the Shares of Common Stock reported in
this 13G.

         A.   TPG-Axon Management
              (a) Amount beneficially owned: 5,500,000
              (b) Percent of class: 6.0%*
                  (*All percentages of beneficial ownership reported in this
                  Schedule 13G are based on 91,321,577 shares of Common Stock
                  issued and outstanding as of May 31, 2007, as reported by
                  the Issuer in its Amendment No. 1 to its Annual Report on
                  Form 10-K/A for the fiscal year ended December 31, 2006
                  filed with the Securities and Exchange Commission on
                  June 18, 2007.)
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote:   0
                 (ii) Shared power to vote or to direct the vote: 5,500,000
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 5,500,000

         B.   PartnersGP
              (a) Amount beneficially owned: 1,834,996
              (b) Percent of class: 2.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote:  0
                 (ii) Shared power to vote or to direct the vote: 1,834,996
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 1,834,996





-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 12 of 18 Pages
-------------------                                          -------------------

         C.   GPLLC
              (a) Amount beneficially owned: 5,500,000
              (b) Percent of class: 6.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote:  0
                 (ii) Shared power to vote or to direct the vote: 5,500,000
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 5,500,000

         D.   TPG-Axon Domestic
              (a) Amount beneficially owned: 1,834,996
              (b) Percent of class: 2.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote:  0
                 (ii) Shared power to vote or to direct the vote: 1,834,996
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 1,834,996

         E.   TPG-Axon Offshore
              (a) Amount beneficially owned: 3,665,004
              (b) Percent of class: 4.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote: 0
                 (ii) Shared power to vote or to direct the vote: 3,665,004
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 3,665,004

         F.   Singh LLC
              (a) Amount beneficially owned: 5,500,000
              (b) Percent of class: 6.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote: 0
                 (ii) Shared power to vote or to direct the vote: 5,500,000
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 5,500,000





-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 13 of 18 Pages
-------------------                                          -------------------

         G.   Mr. Singh
              (a) Amount beneficially owned: 5,500,000
              (b) Percent of class: 6.0%*
              (c) Number of shares as to which the person has:
                  (i) Sole power to vote or to direct the vote:  0
                 (ii) Shared power to vote or to direct the vote: 5,500,000
                (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv) Shared power to dispose or to direct the disposition
                      of: 5,500,000

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

      Not applicable.

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

      See Item 4.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
        THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL
        PERSON.

      Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

      Not applicable

ITEM 9. NOTICE OF DISSOLUTION OF THE GROUP

      Not applicable

ITEM 10. CERTIFICATION

      By signing below I certify that, to the best of my knowledge and belief,
      the securities referred to above were not acquired and are not held for
      the purpose of or with the effect of changing or influencing the control
      of the issuer of the securities and were not acquired and are not held in
      connection with or as a participant in any transaction having that purpose
      or effect.






-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 14 of 18 Pages
-------------------                                          -------------------

                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


Dated:  July 16, 2007


                               TPG-Axon Capital Management, LP
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners GP, LP
                               By: TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon GP, LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                              TPG-Axon Partners, LP
                               By:  TPG-Axon Partners GP, LP, general partner
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President






-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 15 of 18 Pages
-------------------                                          -------------------


                               TPG-Axon Partners (Offshore), Ltd.


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Director


                               Dinakar Singh LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Managing Member


                               /s/  Dinakar Singh
                               ---------------------------
                                    Dinakar Singh








-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 16 of 18 Pages
-------------------                                          -------------------



                                LIST OF EXHIBITS
                                 TO SCHEDULE 13G

                                                                            Page
                                                                            ----

1. Agreement to Make Joint Filing .........................................  15







-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 17 of 18 Pages
-------------------                                          -------------------


                                    EXHIBIT 1

                         AGREEMENT TO MAKE JOINT FILING



         Each of the undersigned acknowledges and agrees that the foregoing
statement on Schedule 13G is filed on behalf of each of the undersigned and that
all subsequent amendments to this statement on Schedule 13G shall be filed on
behalf of each of the undersigned without the necessity of filing additional
joint filing agreements.


Dated:  July 16, 2007


                               TPG-Axon Capital Management, LP
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners GP, LP
                               By: TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon GP, LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President






-------------------                                          -------------------
CUSIP NO. 42330P107                   13G                    Page 18 of 18 Pages
-------------------                                          -------------------

                               TPG-Axon Partners, LP
                               By:  TPG-Axon Partners GP, LP, general partner
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners (Offshore), Ltd.


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Director


                               Dinakar Singh LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Managing Member


                               /s/  Dinakar Singh
                               ---------------------------
                                    Dinakar Singh