Upgrade the cpu to a 2.4C (has hyperthreading and 800 mhz fsb) and the Abit IC7 if you want to go the intel route, if you go AMD go with the 2500+ barton and the Abit NF7-S but make sure its version 2.0! If you go video card and like to game a lot I would go with atleast a radeon 9800 np or maybe a 9700 pro. I would change the memory to (if you overclock) kingston hyper-x or if you got extra $, corsair XMS. Again I suggested the 2500+ barton and the 2.4C in hopes you would overclock.