Hi all. I'm a newborn baby to the Mac universe and got a G4 450 with 128 ram, 18? gig and zip/dvd drive for $100. Sadly I thought it would come with a ADC connector for a Mac monitor I purchased. My question is what can I do to make it run good. I know it's an old computer, but the it didn't come with any OS and was wondering which one I need to get. Thanks in advance, David P.S. Can't wait to start using it and forget about the crap I have to deal with the evil M$!!!!