i just bought a iMac, intel duo core 2.93Mhz 4GB RAM, GT120 Graphic Card. I downloaded a trial version parallels desktop. when i install the windows via pd, it works perfectly fine. but it seems like the graphic card drive is not installed, i inserted the original Mac OS X disk and installed everything in it, it doesnt work at all. When i check the hardware manager and type "dxdiag" in run as, it always shows that the video drive is not installed. How do i fix this problem?