well BFBC2 was off till Friday so tried the demo which didn't play too bad FPS ( plus it is a 'landmark' game) so Bought it though steam.
Well the release plays better then the Demo FPS wise plus was able to play in a 1680x1050 window (same as monitor) Full screen I just get really bad FPS but not in a window!!
can run it at the very high detail and AAx16Q but 20-30 FPS does suck so running it at medium and AA x4 and get a decent 40-60FPS
But can see why it gets such great reviews the maps r so detailed and Big. Defiantly worth the wait

last time I tried the demo it sucked big time - dont think I got to shoot anything before I gave up on it