I think your missing the point of what other members are trying to tell you.
The orignal Computer you posted isn't that great and don't expect that to play many Newer games on Medium to Max Settings.
You will be building this computer yourself, not buying a prebuilt.
The Parts suggested by 003 Is a great start (Im not saying needacpu's suggestion was bad either). You can order parts off many websites. As for building the computer you can find many guides to assite you in the process, and you can even ask here.
yeah.. .dont go with alienware .. unless you really want the case ......lol i got sucked in to that and look what i have for 1323.95 ..... nothing against alienware but yeah its way overpriced
Why does he need a DFI board if he's not overclocking? Why would he want a 7800 GT if he can get an x1900xt or a Geforce 7900? And yea maybe he should pick up an x2 4200 or 4400.