Just a thing, we dont need evga drivers anymore with snowleopard, no injector of course, just the efi string (this work for standart gtx260, 2xDVI + 1xTV)
It work like a charm on x64, just follow the guide on darwinx86.org to put your right device location (PciRoot...)
In my case i used the com.apple.Boot.plist from /Library/Preferences/SystemConfiguration/