Game screws up

So I bought SWAT 4 today and installed. Once I got it on, it seemed to work fine, until I got into the actual game. As soon the first level starts, I can see my gun infront of me, but all the stuff around me is all screwed up, and it just looks like there is nothing there, and it goes on forever, know what I mean. You can only see some of the other stuff, if say I aim my guy at the ground, then I pop up again and it's screwed. Is there any settings I can adjust to fix this. I don't see how it could be my system because this is what I have:

Acer AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
2.01 Ghz
768MB RAM
NVIDA GeForce 6100 nForce 430

And, this is what is required by the game.

System: Pentium III 1.0GHz / Celeron 1.2Ghz / Athlon 1.2 GHz or equivalent
RAM: 256 MB
Video Memory: 32 MB
Hard Drive Space: 2000 MB

PLEASE HELP Im going insane with this. Thank you.

Im gonna show you a screenshot of the game so you can see what Im talking about. But I need one more post before they will let me post URL's

heres the link

SWAT4.jpg - Image - Photobucket - Video and Image Hosting

Are you running off Vista or XP?

Im running XP.... I went to NVIDIA and downloaded new drivers for my card, still doesn't work

Have you tried patching/reinstalling the game?

sometimes *older* drivers are needed, for per-game bugs. fun, isn't it?