Nvidia has released a new set of drivers for the 8 series of cards. Revision number 158.22 for Windows XP and 158.18 for Windows Vista operating systems. 93.71 is still the driver for 7 series and below. Relases notes are here http://www.nvidia.com/object/winxp_2k_158.22.html for XP.

La-*test*-('") Vista version is 158.24:

http://www.nvidia.com/object/winvista_x86_158.24.html
http://www.nvidia.com/object/winvista_x64_158.24.html