I can run it at high settings too, and I managed to sneak in a 1680x1050 resolution, but playability is another issue altogether (don't ask). I might need to double my RAM soon to 2 GB.

At least the game doesn't look like a total eyesore on low settings (lulz I once had to run Halo PC on fixed function) - at that setting, it looks just as good as the Xbox version.