Exhibit B

JOINT FILING AGREEMENT

The undersigned agree that the statement on Schedule 13G/A to which this exhibit is attached is filed on behalf of each of them in capacities set forth below.

Dated: February 6, 2007


TRIDENT II, L.P. By: Trident Capital II, L.P., its sole general partner By: CD Trident II, LLC, a general partner

	By: Name: Title:	/s/ David J. Wermuth David J. Wermuth Vice President

TRIDENT CAPITAL II, L.P. By: CD Trident II, LLC, a general partner
	By:	/s/ David J. Wermuth

	Name: Title:	David J. Wermuth Vice President

STONE POINT CAPITAL LLC

	By:	/s/ David J. Wermuth

	Name: Title:	David J. Wermuth Principal

MARSH & MCLENNAN CAPITAL PROFESSIONALS FUND, L.P. By: Stone Point GP Ltd., its sole general partner

	By:	/s/ David J. Wermuth

	Name: Title:	David J. Wermuth Secretary

MARSH & MCLENNAN EMPLOYEES’ SECURITIES COMPANY, L.P. By: Marsh & McLennan GP I, Inc., its sole general partner By: Stone Point Capital LLC, agent/attorney-in-fact

	By:	/s/ David J. Wermuth

	Name:	David J. Wermuth
	Title:	Principal

JAMES RIVER GROUP, INC SC 13G/A