Had a nightmare time, purchased Lego Star wars for my son. Had to upgrade to the 6600GT, but constantly overheated. Upgrade PSU to 400w, tested with 3dmark, still siezed up. SHould I try to change to an ATI 9600XT. Looking at this forum it seems to have same problems?! Could I go for an older card such as the 5200 or 9550? Will these handle Star Wars and it's pixel shading?? Advice appreciated.