I currently have a G5 tower. Just bought the new iMac, waiting for it to arrive. I currently have 3 HDs, two inside the G5 and one in an external case. I know you can hook up two Macs via firewire, but does that allow you to transfer just files? I've never done it before, so I dont even know how it works. I just want to transfer my stuff, I want to keep the fresh system on the new iMac though.