Exhibit 12.1

Ratio of Earnings to Fixed Charges

	Three Months Ended March 31, 2005			Year Ended December 31,
				2004			2003			2002			2001			2000
	(in millions)
Income (loss) before income taxes	$	107.8		$	355.9		$	39.0		$	(150.6	)	$	(566.7	)	$	(1,406.2	)
Equity in losses of equity-method investees		—			—			0.4			4.2			30.3			304.6
Net income (loss) before equity in losses of equity-method investees		107.8			355.9			39.4			(146.4	)		(536.4	)		(1,101.6	)
Plus fixed charges:
Interest expense including amortization of debt issuance costs		26.1			107.2			130.0			142.9			139.2			130.9
Assumed interest element included in rent expense		1.1			3.9			5.7			6.2			8.9			10.8
		27.2			111.1			135.7			149.1			148.1			141.7
Adjusted earnings (loss)		135.0			467.0			175.1			2.7			(388.3	)		(959.9	)
Fixed charges		(27.2	)		(111.1	)		(135.7	)		(149.1	)		(148.1	)		(141.7	)
Excess (deficiency) of earnings to cover fixed charges	$	107.8		$	355.9		$	39.4		$	(146.4	)	$	(536.4	)	$	(1,101.6	)
Ratio of earnings to fixed charges (1)		4.96			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.