I received an iBook G4 from a friend when he got a new MacBook. Currently it has Ubuntu on it and I don't have the recovery CDs. Is it possible to recover it with some special options or is Ubuntu likely overwritten any recovery options it may have had on it's internal drive? Also I've seen many threads on here about Tiger/Leopard and even a PPC enhanced leopard. Is there a good method to get any of these? I read ebay and retail disks, but would there be an OEM that would work as well for this ibook? Thanks!