I've changed my mind back to the PowerMac G4 that I found, yet again. Anyways, the PowerMac G4 I'm getting is an MDD model and I'm aware that they have dual CPU capabilities. What I want to know is, is there two CPU slots inside the computer for additional CPU's or do you have to swap the Daughtercard with a different one? Of course I'd have to get the same CPU as the first CPU (Which in this one I'm getting has a 1.25GHz PowerPC G4) but then again, I'm still not sure if I can just plop the new CPU in place as easily as most PC systems are. I haven't gotten the PowerMac G4 quite yet, but I'll be getting it soon.