I have a Dell desktop that I could upgraid to 1GB Graphics, 4GB RAM, and 500GB HDD for about $250-$300. the only problem with that is the processor isn't tthat good. any sugustions on a good gamming rig for about $600-$700. i've gone to Newegg.com and found a self-assembly rig for about $500 but there's no grapgics card. Any suggestions guys?