Hello, I hope you can help me. I have an old powerbook G4, running 10.3.9 that i would like to update the os to leopard. my problem is that my dvd drive on the G4 does not work, so Im unable to restart and boot from the install disks. Although I do have an external dvd drive, but when trying to restart holding C, I can't boot into the cd through the external drive. What is the best way for me to get leopard up and running on my g4?