I just got a new MacBook to replace my old G4 Notebook that I got second hand. The aging G4 is full of an accumulation of stuff I'd like to get rid of, so I can continue to use it for emergencies. The problem is I don't have the original reinstallation CDs to use to reformat the G4's hard drive. Is it possible to use the CDs that came with my MacBook, or am I better off just leaving it alone? Thanks!