I've come across a sale for an iMac G5 - 17" screen, 1.8 ghz processor, the later model with 512 ram, a 160 gb hd and combo rather than superdrive. The person who's selling it doesn't have the user name and password and is apparently unable to confirm that everything is running okay, although it powers up alright. So, a couple of questions . . (1) The lack of password is a non-issue if I boot it from a cd, right? Since it doesn't come with discs, could I use the OS X 10.3 disc that I have just to test it? Or will it require 10.4? (2) Assuming it can read a start-up disc, is there an easy way to check that everything is in working order - other than looking at system profiler? Is there a utility in 10.3 that would help me check things out? Okay, I'm rushing at the moment, and not really thinking this through, so if I'm missing something really obvious, please point it out to me. This is just seeming like to good a deal to pass up and I don't want to miss it. (The price is under $500.) Thanks in advance for your help!