Drivers for Parallels

Hey everyone I just bought Fallout 3 and was hoping to run it on Windows Xp on my MBP through Parallels but it seems that parallels doesn't recognize the GeForce 8600 gt graphics card...causing the game to pop up with an error when I try to run it. So my question is...is there any way install the drivers for the 8600 on parallels instead of having "parallels video driver" as my graphics card...?

The error message I get says:
"Failed to initialize renderer.
Hardware T&L required but not supported by adapter"