3rd party modified, unofficial optimized drivers
Have you heard of Omega drivers? They are the work of one man: he optimizes and tweaks NVIDIA and ATI drivers for the gaming masses.
The Omega website is bringing in 2008 with some changes. The site has a new server, a new look, and a new logo for '08.
And just in time for the new year, a new version of the Omega drivers have been released. There is now Vista support for NVIDIA video cards, which is a first for Omega. The drivers are based on Forceware 169.25.
If you are feeling adventurous, and would like to give the Omega drivers a whirl, you can get them on the Omega website.