Before you spend too much time on this I would check to see which graphics chipset you have. You may still be able to boot into OSX but if cant get your graphics chipset to support Quartz Extreme and Core Image Its not going to be a very good experience. Certain application require this to even start up and you will have problems with video.

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MOBO: Z77MX-QUO-AOS CPU: Core i7 3770K GPU: MSI N760 TF 2GD5/OC Case: Modded MacPro2,1
Memory: 32GB Corsair Vengeance (CMY32GX3M4A1600C9) Wifi: Airport Extreme bcm94321MCA BIOS: HermitCrab Labs H3A.816M
Monitor: AOC Q2963Pm 29" WFHD 2560x1080 21:9
Interests: KDE on Apple Darwin, Keeping it real with the command line, Helping those that help themselves