Defo over kill for WOW, but if it's your thing
Vista is pants for any gaming in my opinon. In fact, it's pants full stop.
Wirless keyboards are not good for gaming.
Windows Vista HATES low end gaming pads and joysticks. I am still down grading people who have purchased high end scanners industrial dot matrix printers, bar code users and many more because vista cries like a baby on installation.
My favourate OS is Mandriva Linux...
I only use windows xp dual boot to play MOHAA
Best ever out the windows was 2000. XP and Vista has more holes than Delila's bucket.