Congrats. Might take you a whole 6 months before you find a game that doesn't run great at full detail ;)
I bet Microsoft Flight Simulator X would slow your GeForce 8800 GTX system to a crawl (<15 FPS maybe) on max settings. MSFS 10 is positively the most unoptimized game I have ever seen - my 7800 GT can't even run it on mid settings above 15 fps.