I have Win 7 64 bit pro and the game is working fine. (64bit for use with more then 4 gigs or memory, 32 bit can really only use about 3.25GB of memory)
The OS is the least important thing though if the game supports it. Pretty much any game that worked or works on Vista will work with Win 7. I've not had one that did not yet. Now some old XP games won't work so that is why I went with pro version as you can download the XP mode and virtual PC to get those old games or programs to work.
I've not had a single crash (BSOD) with Win 7 that I have not caused myself by setting a bad overclock on my processor. Have not had any problems with any of my other programs either as far as them working.
Any preference on a Intel or AMD build? If Intel I can help you with your choices or give suggestions on if what your thinking about buying a good choice. Don't know too much about AMD, just enough to get by.
Good place to get help on either type of build is the EVGA forums. Nearly everyone over there is pretty helpful and a lot of knowledgeable people over there that don't throw that knowledge in your face.
EVGA forums I go by the same user name over there by the way.
