Wolf Launcher

I just reinstalled Kotor2 and then did all the updates now I started playing got to the part where I am just getting off the elevator to the lower levels of paragus then my graphics go all glitchy and the game freezes. I restarted try it again now it does it at the main title screen of the game. I use a Nvidie gforce fx5700 ve. I think this problem is because of one of the patches because I played it before and never had a problem. If anyone knows what to do to fix this please let me know.