I am currently running, Pentium 4 3.00Ghz processor, 2GB RAM, 500w power supply, and a 6600GT AGP graphics card. I am worried about this whole new microsoft vista thing, i am currently on XP home edition, will i be able to upgrade to vista premium? Or will i hav to purchase whole package and install it? Also i understand i can only use dx10 if i have vista, will vista and dx10 work if i am using my 6600GT still? Or do i HAVE to buy a special graphics card? I would be hugely greatfull if somebody could put me at rest here, thanks a load.