I'm trying to install OS X on my 7500. I have a Crescendo G3 400, 208 MB RAM, a 18 GB Compaq SCSI, 1.2 GB Quantum, USB card, and ATI Rage pro. I have tried Unsupported Utility X, and the installer from Sonnet. Neither work. When i restart to install OS X, I either get a blank (Black) screen, or...