Exhibit 12

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

				Years ended December 31,
				2002		2001(a)			2000(a)			1999 (a)			1998
Earnings—
Pre-Tax income (loss) from continuing
		operations		$	13,685	$	(95,614	)	$	(303,576	)	$	(184,280	)	$	(54,600	)
Add: Allocated losses of equity investees					—		26,495			119,183			84,545			75,052
			Fixed charges		22,824		26,100			29,613			25,850			9,434
			Amortization of capitalized interest		182		222			3,846			4,893			1,504
Less: Interest capitalized					—		—			(1,846	)		(3,100	)		(1,705	)
	Earnings			$	36,691	$	(42,797	)	$	(152,780	)	$	(72,092	)	$	29,685
Fixed Charges—
			Interest costs, both capital and expense, and amortization of debt costs	$	17,450	$	21,671		$	25,883		$	22,920		$	7,511
			Portion of rental expense representative of interest factor		5,374		4,429			3,730			2,930			1,923
	Fixed Charges			$	22,824	$	26,100		$	29,613		$	25,850		$	9,434
	Ratio of Earnings to Fixed Charges				1.6		—			—			—			3.1

(a) For purposes of computing the ratio of earnings to fixed charges, earnings include pre-tax income (loss) from continuing operations and fixed charges less capitalized interest. Earnings are also adjusted to exclude allocated share of losses of affiliates. Fixed charges consist of interest expense, capitalized interest, a portion of rental expense (deemed by management to be representative of the interest factor of rental payments) and amortization of debt issuance costs. Earnings were inadequate to cover fixed charges by approximately $68.9 million, $182.4 million and $97.9 million for the years ending December 31, 2001, 2000 and 1999, respectively.