Exhibit 12

Calculation of Ratios of Earnings to Fixed Charges

	Nine Months Ended
	September 30,						Year Ended December 31,
	2007			2006			2006			2005			2004			2003			2002
	(in thousands, except ratios)
RATIO OF EARNINGS TO FIXED CHARGES:
Pre-tax (loss) income from continuing operations before adjustment for
income from equity investee		(228,777	)		(19,255	)		(11,750	)		(12,390	)		(14,321	)		11,564			(19,192	)
Fixed charges:
Interest expense (a)		56,238			20,796			26,570			21,795			22,114			9,711			15,069
Preferred stock accretion and dividends		—			—			—			—			10			448			2,374
Interest portion of rent expense (b)		2,947			2,210			2,956			2,504			1,849			1,439			1,078
Total fixed charges		59,185			23,006			29,526			24,299			23,973			11,598			18,521
Total earnings (loss)		(169,592	)		3,751			17,776			11,909			9,652			23,162			(671	)
Ratio of earnings to fixed charges		—			0.2	x		0.6	x		0.5	x		0.4	x		2.0	x		—
Ratio of coverage deficiency		(c	)		(c	)		(c	)		(c	)		(c	)		—			(c	)

(a)	Interest expense includes the write-off and amortization of deferred financing costs and the write-off and amortization of non-cash discounts associated with our debt issuances.
(b)	Includes approximately one-fourth of the rent expense for each period presented which management believes is a reasonable approximation of the interest component of such rentals.
(c)	Due to the loss from operations for the nine months ended September 30, 2007 and 2006 and the years ended December 31, 2006, 2005, 2004, and 2002 there were insufficient earnings of $228.8 million, $19.3 million, $11.8 million, $12.4 million, $14.3 million and $19.2 million, respectively, to cover fixed charges.