Also you need to remember under win xp he is limited to dx9 which in turns shadows all of the vid memory to system memory. So with a 1 gb vid card and lets just say he has 2gb of memory. Dx9 is going to take 1gb of system memory for shadowing of the gpu, so he will just have 1 gb of ram left to runs the os and programs. If he plays a demanding game or run a demanding program he could possibly run out of system memory. win vista and 7 use dx 11 so it is no longer a problem. Just adding this as this may be the reason he is choosing win vista or 7 over win xp. Without knowing complete system specs we are all just guessing but I will vouch for eidairaman1 as he has done some intensive testing of just this. Agp systems with win vista and win 7. He does know what he is talking about here.