Exhibit 12.1

Statement of Computation of Ratios

The following illustrates the computation of the ratio of earnings to fixed charges:

	Historical													Pro Forma		Historical		Pro Forma
	Year Ended December 31,															Three Months Ended March 31, 2005
	2000			2001			2002			2003		2004		2004
	(dollars in thousands)
Fixed Charges:
Interest on debt and capitalized leases	$	9,873		$	7,926		$	6,706		$	18,568	$	41,971	$	91,319	$	9,863	$	22,484
Amortization of debt discount and expense		572			1,159			1,945			3,765		6,699		3,412		406		(671	)
Interest element of rentals*		3,572			3,698			3,484			4,255		9,506		12,102		2,710		3,313
Investee’s fixed charges		241			487			—			—		—		—		—		—
Total Fixed Charges	$	14,258		$	13,270		$	12,135		$	26,588	$	58,176	$	106,833	$	12,979	$	25,126
Earnings:
Net income (loss)	$	68,018		$	15,301		$	(93,902	)	$	40,683	$	184,327	$	194,731	$	49,893	$	40,831
Add back:
Loss (income) from discontinued operations		(6,413	)		(4,712	)		117,875			—		—		—		—		—
Income tax provision		43,522			6,770			13,613			26,131		113,336		124,980		30,710		25,980
Loss on equity method investment		3,329			5,741			—			—		—		—		—		—
Fixed charges less interest capitalized		14,244			13,065			12,135			26,588		58,176		106,833		12,979		25,126
Total Earnings	$	122,700		$	36,165		$	49,721		$	93,402	$	355,839	$	426,544	$	93,582	$	91,937
Ratio of Earnings to Fixed Charges		8.5x			2.7x			4.1x			3.5x		6.1x		4.0x		7.2x		3.7x

* We determined the interest component of rent expense to be 10%.

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