Saw that TweakFiles has posted a new version of Nvidia Reg Patch with Windows 2000 support.
This patch is a compilation of settings that the author has gathered which are designed to produce the best overall performance and quality of any Nvidia card using 5.xx, 6.xx, and 7.xx Detonator drivers.Download
This program is a REG file, which means you simple click it to install. Make sure you back up your registry first. Instructions on how to do so are in the readme.txt file.
New in this version:
Detonator 7.xx support added.
Win 2000 support added.