http://www.nvidia.com

Good luck connecting, they are swamped with download requests. Friends with Nvidia cards (GF3's) who have already downloaded the drivers, say they really do have a 20-30% boost as expected...

-Shawn

Direct to the FTP ftp://ftp1.detonator.nvidia.com/pub/drivers/english/Windows/21.81/
Worked for me when I could get nvidia.com to load;)