Windows XP Forceware 162.15 Beta

http://www.nvidia.com/object/winxp_2k_162.15.html

1) If ntune is installed, uninstall ntune.
2) Uninstall Existing drivers (use DCP if desired)
3) Install 162.15
4) Install ntune 5.05.38.00 only.

http://www.nvidia.com/object/ntune_5.05.38.00.html