Exhibit 12.1

           
  COMPUTATION OF CONSOLIDATED RATIOS OF EARNINGS TO FIXED CHARGES

	Year Ended March 31,
(in millions)	2008		2007		2006		2005		2004
Earnings (loss) before income tax		434.4		300.6		203.8		98.2		(29.4	)
Interest expense		1.1		1.5		1.7		2.0		1.1
Estimated interest component of rental expenses		17.8		17.5		16.3		18.3		19.7
Total Fixed Charges	$	18.9	$	19.0	$	18.0	$	20.3	$	20.8
Earnings (loss) before provision (benefit) for income taxes and fixed charges	$	453.3	$	319.6	$	221.8	$	118.5	$	(8.6	)
Ratio of earnings to fixed charges		24.0 x		16.8 x		12.3 x		5.8 x		(a)

(a) The deficiency in the coverage of fixed charges by earnings before fixed charges was $29.4 million for the year ended March 31, 2004.