I currently have my voodoo3 2000 16mb pci graphics
card running with xp and 1 of the sfft drivers. the problem is When trying to play grand prix legends the 3dfx scrrenn comes up says loading and then a garbled scvreen appears. It is patched to work on xp. Driver problem???

I run the same game with the same Voodoo card on Win98. Have you tried installing AmigaSport 3.0?  ;)

Take AmigaMerlin 3.1 R11 it's the best and most stable Win2K/WinXP driver for all VSA-100 cards :)
http://www.traumatic.de/pphlogger/dlcount.php?id=FalconFly&url=http://www.falconfly.de/downloads/amigamerlin-winxp-31_r11.zip

and if you really like the SFFT drivers no problem, SFFT 42
http://www.3dfxzone.it/monitor/am/go.asp?url=251

New SFFT Alpha 42 Driver

This is sixth SFFT driver release based on the new Unified Architecture supporting by one package all Voodoo3 family, including Voodoo3 2000, Voodoo3 3000 and Voodoo3 3500 cards, as well as all 3dfx VSA-100 products and so Voodoo4 4500, Voodoo5 5500 and Voodoo5 6000 cards. It is designed and developed to work with both Windows 2000/XP (32 bit) and Windows XP Professional x64 Edition (64 bit) Microsoft Operative Systems.

Unified Architecture Driver

This driver is part of a our new project that aims to get 3dfx working with some x64 OSes and some x64 hardware systems. If will be possible to catch up this target reducing hardware compatibility issues, we'll use same Unified Architecture driver for all Voodoo3/4/5 graphics controllers.

SFFT42 seems to be very nice with Kool Smokey's Voodoo Control 1.82 Beta as Control Panel:
http://www.traumatic.de/pphlogger/dlcount.php?id=FalconFly&url=http://www.falconfly-central.de/downloads/v_ctrl-v182b.zip