not that simple im afraid my friends. 9800 pro and 6800 gt are 2 different bus slots if you didnt know
not only would he had brought a new vid card, he would need a new mother board, possibly a new cpu, new ram since older versions do Dimm ram i think its called. and a new and higher watt power supply
EDIT* if you ARE willing to put down that kind of money, wait till this summer when amd releases am2 socket. and ATI has released their x2000 series with like shader model 4 and i would think 1gb cards
I'm aware of all those details. I build PC's. But I only upgrade when the dire need strikes. I'm using a Athlon64 3000 S-939 right now with a gig of ram and a 9800 Pro... and that's not even enough. That's why I stick to consoles. But come August when Vista certification is complete, I'll think about upgrading again. It'll had been 2-3 years by then.