If you go XP on this computer i'll come over and burn it!
And before any of you 12yr old weeds come out and say BUT XP will run faster. BULLSHIT do your research - VISTA + THAT VID CARD + DRIECT X10 - That puppy will haul ass!
So - Vista Home Premium or higher to take full advantage of your build. It sounds like a fun little toy to own - Pics and prices once it's all done would be sweet! Tell me your not buying cheap memory tho - Buy some Giel memory or better a few extra bucks VERY well spent!