Hi all, I have one of the earliest Alu iMacs, 20" screen, comes up as iMac7,1. I can't seem to get DP2 (or DP1 for that matter) to install. It runs through, but stalls on "Installing." I get the mountain backdrop, the drives seem to run for a bit, then I simply have to shut off the computer to get back home. Any suggestions? I do know that the EFI on this machine won't let me boot into 64-bit, but other than that, I'm lost. I would have thought that it wouldn't let me go through the install if the computer wasn't supported. So far, an exercise in frustration! Thanks!