Well looks like I'm gonna just get a different Mac. Been dumping money into this thing for years now, upgraded DVD, upgraded Ram, PCI SAT card with Raptor drive, Extra 30 gig storage drive, and also a 5 port USB 2 card. Even with all that it can't go past Leopard anyway. I may just run it as a headless server until I find another video card to try for cheap...
2011 27"iMac, 2012 Intel Mac Mini