Always install the newest version of DirectX, regardless of the version your card's hardware supports (which, BTW, is DirectX 8 for the Geforce3... not 8.1.
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Radeon 9500 (hardmodded to PRO, o/c to 322/322)
AMD AthlonXP 2400+ (o/c to 2600+ with 143 fsb)
3dMark03: 4055