Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

(in thousands)

	Year Ended December 31,															Three Months Ended March 31,
	2005			2004			2003			2002			2001			2006			2005
Earnings:
Income (loss) before provision for income taxes, equity in loss of unconsolidated affiliates and cumulative effect of change in accounting principle	$	(150,382	)	$	(4,682	)	$	59,637		$	(27,228	)	$	(301,176	)	$	(14,416	)	$	(32,155	)
Add: Fixed charges		60,988			57,542			66,610			74,240			107,441			15,875			14,392
Less: Minority interest		(381	)		(452	)		(347	)		(446	)		(132	)		(102	)		(124	)
Less: Equity investment		249			412			2,678			3,225			—			—			281
Total earnings before fixed charges	$	(89,262	)	$	52,900		$	123,916		$	44,233		$	(193,603	)	$	1,561		$	(17,920	)
Fixed charges:
Interest expense		53,440			50,526			60,733			68,303			100,700			14,071			12,442
Estimated interest component of rent expense		7,548			7,016			5,877			5,937			6,741			1,804			1,950
Total fixed charges	$	60,988		$	57,542		$	66,610		$	74,240		$	107,441		$	15,875		$	14,392
Shortage	$	150,250		$	4,642			NA		$	30,007		$	301,044		$	14,314		$	32,312
Ratio of earnings to fixed charges(1)		<1			<1			1.86			<1			<1			<1			<1

(1) The ratio of earnings to fixed charges is computed by dividing the sum of pre-tax income from continuing operations (before adjustment for minority interests in consolidated subsidiaries and loss from equity investees) plus fixed charges, by fixed charges. Fixed charges consist of interest charges, whether expensed or capitalized, and that portion of rental expense we believe to be representative of interest.