Koroush has his CoD2 tweak guide up. I just started playing it last nite... very similar to the original, but the smoke effects are very cool. The graphics overall are definitely stressing out my system, too. Ugh... I need to spend money on another upgrade like I need a hole in my head.

"The guide runs through all the in-game settings in careful detail, providing lots of screenshot comparisons of the main graphical effects to aid you in deciding on the precise balance of performance vs. visual quality on your system. It covers all the advanced tweaking possible in Call of Duty 2, and finally it provides links to a range of valuable resources to help you in troubleshooting, modifying and patching the game."