I followed a snow leopard guide and it got me to a point where the System Profiler would detect the gtx 295s but i could not change resolutions ( http://www.insanelymac.com/forum/index.php...p;#entry1338125 )
I removed all the NV* kexts from the /System/Library/Extensions folder (or just copy to another folder for backup)
Then placed some other kexts in my /Extra/Extensions folder. I have zipped up all the kexts and placed on my dropbox -- i just uploaded to my dropbox, may take a little while before it is available. http://dl.dropbox.com/u/11956893/Extensions.zip
after those have been copied, i run myFix1.3 to refresh the kext cache and repair permissions.
Install the NVIDIA driver mpkg http://dl.dropbox.com/u/11956893/NVIDIA%20...5.8f03.mpkg.zip
I boot with a kernel flag "GraphicsEnabler=No"