I am attempting to upgrade my video card drivers with my nvidia 8600 gt. I downloaded the drivers from NVIDIA and when I run the setup, nothing happens. It does appear in the Processes, but never does anything.

I've tried restarting, tried killing the process and re-running, I am an admin account... nothing works. What is wrong?

[EDIT] The installer does run, it extracts the setup files to C:\NVIDIA as normal then when it tries to run that setup to do the actual install, nothing happens (the process does show up in Task Manager and just sits there).

Attempting to run the installer manually via C:\NVIDIA\DisplayDriver\296.10\WinXP\English\Setup.exe has the process open, but nothing happens.

This machine is WinXP 32bit.