Exhibit 12.1

Ratio of Earnings To Fixed Charges

	Year Ended December 31,
	2004			2003			2002			2001			2000
	(amounts in thousands)
Income (loss) before income taxes	$	355,870		$	38,988		$	(150,633	)	$	(566,733	)	$	(1,406,169	)
Equity in losses of equity-method investees		—			436			4,169			30,327			304,596
Net income (loss) before equity in losses of equity-method investees		355,870			39,424			(146,464	)		(536,406	)		(1,101,573	)
Plus fixed charges:
Interest expense including amortization of debt issuance costs		107,227			129,979			142,925			139,232			130,921
Assumed interest element included in rent expense		3,881			5,718			6,205			8,880			10,773
		111,108			135,697			149,130			148,112			141,694
Adjusted earnings (loss)		466,978			175,121			2,666			(388,294	)		(959,879	)
Fixed charges		(111,108	)		(135,697	)		(149,130	)		(148,112	)		(141,694	)
Excess (deficiency) of earnings to cover fixed charges	$	355,870		$	39,424		$	(146,464	)	$	(536,406	)	$	(1,101,573	)
Ratio of earnings to fixed charges (1)		4.20			1.29			0.02			(2.62	)		(6.77	)

(1) The ratio of earnings to fixed charges is computed by dividing (i) income (loss) before income taxes and losses from equity interests, plus fixed charges by (ii) fixed charges.