SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G
                                (RULE 13d - 102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-1(b), (c) AND (d)
                  AND AMENDMENTS THERETO FILED PURSUANT TO 13d

                               (Amendment No. 2)*

HAPC, Inc. (f/k/a Healthcare Acquisition Partners Corp.)
- -------------------------------------------------------
(Name of Issuer)

Common Stock
- -------------------------------------------------------
(Title of Class of Securities)

42224P106
- -------------------------------------------------------
(CUSIP Number)

September 29, 2006
- -------------------------------------------------------
(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  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

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  (however,  see the
Notes).


                       (Continued on the Following Pages)

1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Amaranth 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 Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 0 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 0 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON See 6 and 8 above. 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0% 12. TYPE OF REPORTING PERSON* CO

1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Amaranth Global Equities Master Fund Limited 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 SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 0 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 0 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON See 6 and 8 above. 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0% 12. TYPE OF REPORTING PERSON* CO

1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Amaranth Advisors L.L.C. 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 SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 0 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 0 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON See 6 and 8 above. 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0% 12. TYPE OF REPORTING PERSON* IA

1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Nicholas M. Maounis 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [x] (b) [ ] 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION United States NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 0 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 0 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON See 6 and 8 above. 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0% 12. TYPE OF REPORTING PERSON* IN, HC

This statement is filed with respect to the shares of common stock, having $.0001 par value (the "Common Stock") of HAPC, Inc. (f/k/a Healthcare Acquisition Partners Corp.) (the "Issuer") beneficially owned by Amaranth LLC ("Amaranth") and Amaranth Global Equities Master Fund Limited ("Global"), both Cayman Islands exempted companies, Amaranth Advisors L.L.C. and Nicholas M. Maounis (collectively, the "Reporting Persons") as of October 19, 2006 and amends and supplements the Schedule 13G filed April 24, 2006, as previously amended, collectively, (the "Schedule 13G"). Except as set forth herein, the Schedule 13G is unmodified. Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) The Reporting Persons do not own any shares of Common Stock. (b) Not Applicable. (c) Number of shares as to which such person has: (i) Sole power to vote or direct the vote Not Applicable (ii) Shared power to vote or to direct the vote Not Applicable (iii) Sole power to dispose or to direct the disposition of Not Applicable (iv) Shared power to dispose or to direct the disposition of Not Applicable Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the Reporting Persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following [X]. Item 10. Certification. By signing below the undersigned certifies that, to the best of its 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.

SIGNATURES After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information with respect to it set forth in this statement is true, complete, and correct. Dated: October 19, 2006 AMARANTH LLC, by Amaranth Advisors L.L.C., as Trading Advisor By: /s/ Nicholas M. Maounis ----------------------- Nicholas M. Maounis, Managing Member AMARANTH GLOBAL EQUITIES MASTER FUND LIMITED, by Amaranth Advisors L.L.C., as Trading Advisor By: /s/ Nicholas M. Maounis ----------------------- Nicholas M. Maounis, Managing Member AMARANTH ADVISORS L.L.C. By: /s/ Nicholas M. Maounis ----------------------- Nicholas M. Maounis, Managing Member NICHOLAS M. MAOUNIS /s/ Nicholas M. Maounis ----------------------- Nicholas M. Maounis