I just got a new MacBook Pro. As I was migrating my data from my old G4, I got a message that the hard drive was broken, and the G4 would subsequently not start. I wiped the HD and reinstalled 10.2. But the OS is so old, it won't do much 9 (i.e. download and install flash 9....my daughter wants to play webkinz). Can anyone help me get back to 10.4.? I tried downloading updates from apple, but nothing will open (decompress) after downloading.