Timan I love this Mac Pro its crazy fast, couple of my friends just got their 2.8GHz with 8800GT cost them around $2,999, I have tried Boot Camp with 64-Bit Vista and it runs great, Plays all PC games i've tried Crysis, Call Of Duty 4, Orange Box, BF2, BF 2142, Counter Strike Source and it all runs just like a regular PC, Parallels 3.0 works with Boot Camp plus it was free with purchase with the Mac Pro at MacMall.com, hope you sell your iMac you won't be disappointed with the Mac Pro, Now I'm just waiting for Apple to release updated Cinema Displays with built-in iSights because Leopard you can use PhotoBooth with the Mac Pro