Latest Nvidia Drivers
nVIDIA have released the latest version of their Detonator XP drivers. Note, these drivers are not for XP, they will work on XP, but they will also work on Win9x, WinNT and Win2K.
Here is the performance difference measured with 3D Mark 2001.
23.11 Drivers: 3342
28.32 Drivers: 3546
You can download the new drivers from the nVidia web site.