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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Dresser-Rand Group, Inc.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

261608 10 3

(CUSIP Number)

December 31, 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:

o Rule 13d-1(b)

o Rule 13d-1(c)

þ 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 the disclosures provided in a prior cover page.

The information required in 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).


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve GP X, Inc.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	84-2133571

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	CO


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve GP X, L.P.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	56-2416968

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	PN


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve Fund X, L.P.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	51-0490000

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	PN


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve GP IX, Inc.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	91-2092543

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	CO


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve GP IX, L.P.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	91-2084653

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	PN


CUSIP No.		261608 10 3


1	NAMES OF REPORTING PERSONS: First Reserve Fund IX, L.P.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	91-2984652

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			11,607,406

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			11,607,406

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	11,607,406

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

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

	13.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	PN

Item 1(a). Name of Issuer

Dresser-Rand Group, Inc.

Item 1(b). Address of Issuer’s Principal Executive Offices

Paul Clark Drive, Olean, New York, 14760

Item 2(a). Name of Persons Filing

This Schedule 13G is filed on behalf of each of the following entities (collectively, the “Reporting Persons”):

First Reserve GP X, Inc.

First Reserve GP X, L.P.

First Reserve Fund X, L.P.

First Reserve GP IX, Inc.

First Reserve GP IX, L.P.

First Reserve Fund IX, L.P.

11,596,981 of the shares listed in Item 4 below for each Reporting Person are directly held by D-R Interholding, LLC (“Interholding”). Dresser-Rand Holdings, LLC (“Holdings”) is the sole member of Interholding. First Reserve Fund IX, L.P. (“Fund IX”) and First Reserve Fund X, L.P. (“Fund X”) are the two managing members of Holdings, and in such capacity each may be deemed to share beneficial ownership of the shares of the Issuer held for the account of Interholding. First Reserve GP IX, L.P. (“GP IX”) is the general partner of Fund IX and may be deemed to share beneficial ownership of the shares of the Issuer held for the account of Interholding. First Reserve GP IX, Inc. is the general partner of GP IX and may be deemed to share beneficial ownership of the shares of the Issuer held for the account of Interholding. First Reserve GP X, L.P. (“GP X”) is the general partner of Fund X and may be deemed to share beneficial ownership of the shares of the Issuer held for the account of Interholding. First Reserve GP X, Inc. is the general partner of GP X and may be deemed to share beneficial ownership of the shares of the Issuer held for the account of Interholding.

The remaining 10,425 shares listed in Item 4 below for each Reporting Person are directly beneficially owned by William E. Macaulay, Mark A. McComiskey, and Kenneth W. Moore, each of whom holds 3,475 restricted stock units granted by the Issuer under its 2005 Directors Stock Incentive Plan on February 2, 2007. Each of Messrs. Macaulay, McComiskey, and Moore are directors of the Issuer and officers of each of First Reserve GP IX, Inc. and First Reserve GP X, Inc. Each of the Reporting Persons may be deemed to share beneficial ownership of the shares underlying the 10,425 aggregate restricted stock units granted to Messrs. Macaulay, McComiskey, and Moore.

Item 2(b). Address of Principal Business Office of Each Reporting Person

One Lafayette Place, Third Floor, Greenwich, Connecticut 06830

Item 2(c). Citizenship of Each Reporting Person

Delaware

Item 2(d). Title of Class of Securities

Common Stock, par value $0.01 per share

Item 2(e). CUSIP Number

261608 10 3

Item 3. If this statement is filed pursuant to §§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 §240.13d-1(b)(1)(ii)(E).

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

(g)	¨	A parent holding company or control person in accordance with §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 §240.13d-1(b)(1)(ii)(J).

Item 4. Ownership

The following shares of Common Stock, par value $0.01 per share (the “Common Stock”), of Dresser-Rand Group, Inc., a Delaware corporation (the “Issuer”), are beneficially owned by the Reporting Persons. All percentages of Common Stock reported in this amendment to Schedule 13G have been calculated based on the Common Stock outstanding on November 8, 2006, as reported in the Issuer’s Prospectus Summary filed with the U.S. Securities and Exchange Commission on November 8, 2006 pursuant to Rule 424(b)(3) of the Securities Act of 1933.


First Reserve GP X, Inc.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406


First Reserve GP X, L.P.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406

First Reserve Fund X, L.P.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406

First Reserve GP IX, Inc.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406

First Reserve GP IX, L.P.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406

First Reserve Fund IX, L.P.:	Amount beneficially owned:	11,607,406
	Percent of class:	13.6%
	Sole voting power:	0
	Shared voting power:	11,607,406
	Sole dispositive power:	0
	Shared dispositive power:	11,607,406

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

Not applicable.

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the
Parent Holding Company

Not applicable.

Item 8. Identification and Classification of Members of the Group

Not applicable.

Item 9. Notice of Dissolution of Group

Not applicable.

Item 10. Certification

Not applicable.

[Signature Pages Follow]

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.


	FIRST RESERVE GP X, INC.
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer


	FIRST RESERVE GP X, L.P. By: First Reserve GP X, Inc., Its General Partner
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer


	FIRST RESERVE FUND X, L.P. By: First Reserve GP X, L.P., Its General Partner By: First Reserve GP X, Inc., Its General Partner
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer


	FIRST RESERVE GP IX, INC.
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer


	FIRST RESERVE GP IX, L.P. By: First Reserve GP IX, Inc., Its General Partner
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer


	FIRST RESERVE FUND IX, L.P. By: First Reserve GP IX, L.P., Its General Partner By: First Reserve GP IX, Inc., Its General Partner
Date: February 13, 2007	By:	/s/ Anne E. Gold
		Name:	Anne E. Gold
		Title:	Chief Administrative Officer, Secretary and Assistant Treasurer

EXHIBIT INDEX


Exhibit 1		Joint Filing Agreement dated February 9, 2006 among the Reporting Persons, incorporated by reference herein as Exhibit 1 to this Amendment No. 1 to Schedule 13G.