This is quick and dirty how-to to get Quartz Extreme and Core Image at full resolution working on OSx86 (with OSX 10.4.8) a nVidia 7600gt 256MB card.
Follow the simple insructions below and you can’t go wrong:
- Install OSx86 with the optional Natit package
- Once booted find your card identifier by adding the DeviceID and VendorID together to get a string (mine is 0×02e110de)
- Edit the corresponding <string> tag for the IOPCIMatch key in these four packages (in /System/Library/Extensions)
- Geforce.kext
- NVDANV40Hal.kext
- NVDANV30Hal.kext
- NVDAResman.kext
If the file is like this:
<key>IOPCIMatch</key>
<string>0×00000000&0×0000ffff</string>
Replace it with this:
<key>IOPCIMatch</key>
<string>0×02e010de&0×0000ffff</string>If the key has a number of values in the string tag, just add 0×02e010de&0×0000ffff to the start of the list.
- You now need to flush the kext cache so run the following:
sudo rm /System/Library/Extensions.* - Now reboot and enjoy the goodness of Mac OSx86
I cannot claim the credit for this, I got it from this forum here http://www.osxx86.info/vbulletin/showthread.php?t=1514 by a post by sinjon (shot mate 
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