Help pls

[Noodlezz]

i have installed the application as the usual installation.... and it works great on my other computer.... (Win XP, 256 VGA, 1gb RAM) but when i installed it on this unit... a pop up appears saying that "driver mis-match" can anyone tell me what was the problem... i got here a 2GB RAM ,Nvidia7100,
E5400 Intel WIN 7... pls help me.. thnx