Ok, I need help choosing an operating system. What's the diff between 32 and 64 bit for XP anyway? What is the performance difference? Also, does it really matter if I get Home Edition, Pro, or Media Center? OR should I just get Vista instead, I've read XP is better in performance though. Thx

Specs: AMD Athlon 64 X2 5000+ BE 2.60Ghz, PNY 8800 GT, 2GB PC6400 RAM

I haven't played on the PC in awhile, but now that I have a newer rig I should be able to run games better. I need help deciding which ones I should get first; above are some of the ones I was thinking about getting. My specs: Athlon 64 X2 5000+ Black Edition, 2 gigs of RAM, XFX Geforce 9800 GTX, and Windows XP. Thx in advance