I am getting ready to upgrade the processor on my G4 500/AGP Graphics version 2.8 (M7629LL/A). I had been hoping to replace it with a dual processor card either pulled from another G4, or a Sonnet or other 3rd party. I was recently told that not all AGP models will support dual processors...is this true? Also, can I use a processor pulled from a Quicksilver or MDD? If not just what can I use? I recently upgraded to Photoshop CS and Dreamweaver MX 2004 and man do I need more processor speed! I don't have a lot of money to spend, so please do not suggest that I buy a new machine.