New Nvidia beta drivers came out today, maybe these drivers will finally fix the 8800 series and their lag problems with UT.
Windows XP: http://www.nvidia.com/object/winxp_163.75.html
Windows Vista 32 bit: http://www.nvidia.com/object/winvista_x86_163.75.html
Windows Vista 64 bit: http://www.nvidia.com/object/winvista_x64_163.75.html
EDIT: I had a few issues installing these drivers, but in the end it worked fine. Use at your own risk!
New Nvidia Beta Drivers
Hmmm dont know if ill try these last set of beta drivers I tried out it kept crashing bio shock.
Aih PittaH TeH F00l !!!1!11