I am currently running Preps 4.2 on a very old G3 and need to upgrade to Preps 5.1. Only problem is I have a very limited budget to spend. I have a extra G4 that I would like to use but reading the Operating Specs for Preps it says you need a G5. Is that true? If not is there someone out there running Preps 5.1 on a G4 and if so what did you do to upgrade?