I am interested in adding a dvd burner to my computer the original 400mz G4 desktop. I dont want to pay the $450 for external firewire to burn dvd's and cd's..plus Idvd wont run on an external....some tell me the pioneer is the copatible superdrive but when i check on it i only read about its windows compatibility....whats the deal...can I buy it and install it myself?...I prefer the $250 price tag