Green Shadows in game

Hey... When I play GTA San Andreas, the graphics are a bit odd. Specifically, everything to do with shadows seem to be messed up. Shadows are green and "splotchy", same with smoke. I know for a fact that this game used to work fine on my computer but after I reinstalled Windows XP, this issue came up. I have a NVIDIA Geforce 8600GT, which is more than enough to run San Andreas. I have a feeling that it has something to do with my video card settings through the Nvidia control panel since there really isn't much to change in-game. I have updated my video card driver but I still get the same issue.

Any ideas?

A couple thoughs.

Is the fan and air channels on the card clean?

Back down several versions of the driver. The newer ones maybe what is giving you the fits.

All right. Thanks for the suggestions. I'll look into it.