openGL problems i dont understand

hi I just recently bout a new pentium 4 1.7ghz computer a few days ago
when i try to run games like quake 3 i get half screen and the left side is a total mess-up and the right side is the game i dont get it

my system spec.
p4 1.7ghz
384mb DDR pc2100 ram
GeForce3 64mb

please help thanks a bunch in advanced

Something is wrong with your hardware. Maybe does the card not get enough power?

im not sure but it’s a 300 watt case from alienware