Yea Vista......
It's alrite but still its full of bugs. You need a reasonable computer to run it but for now i'd stay with XP until SP1 for Vista is released. Also You deffiently don't want Vista for gaming atm. You first need a DX10 video card if you wanna play games in vista and also some games don't work so you also need to install DirectX 9. If you want a decent Vista machine your will need to invest a lot for a system that is futureproofed
Haris - no offence but the 8500 GT sucks, a 7600 GT can beat it easily, it's like the baby of the Gefore 8 series and your much better off getting a 8600 GTS or a 8800 GTS.