Hello,

Did you already try to enable QE with OSx86Tools? Maybe you could give it a try.
Make sure you really have the right Drivers for your Card installed.

gl

EDIT: If your System has the right Driver for your GPU loaded maybe this

>> http://www.insanelymac.com/forum/lof...php/t8472.html

will help you.

You should check in System Profiler > Graphics/Display if there is a kext loaded for you GPU.
You can also check in System Profiler > Software > Extensions for loaded GeForce.kext and NV*.kext

If there is no Driver loaded for you GPU you need to get a working Driver first.

gl