So I can get a G4 Shell for 20$. I had a G4 desktop like a year ago, and I regret getting rid of it. Basically, If I buy the shell, can I slowly build a monster machine. I know Ill need a super fast computer for my Graphic Design work/studio work. Basically, what could I do with this machine? And whats a estimate price range? Maybe something custom? G5 internals? I want it to be able to run smooth on Photoshop, and internet, maybe even music all smooth and not freezing up. Id also like it to be able to run the newest OS.