Cheap RAID controllers suck - at least you can trust Windows to be consistent between installations if need be. External (preferably offsite) backup is also a must! As I'm sure you'll be reminded 1000 times in this thread, RAID is not backup.
Seriously? I don't remember the exact figures, but I believe we're paying under $30/seat for 50 licenses. It's really hard for me to believe it's not worth somewhere in the $1000/yr ballpark to have decent AV protection for your company.
Well below 30 FPS average in Crysis 1920x1200 with only 0xAA and 8xAF? No thanks. Why would I buy a card that's underpowered on today's^H^H^H last year's games at far less than max quality?