I have a Powerbook G4 500mhz, and the optical drive is busted. Not worth the money to have apple fix it, I was hoping you guys could help me out. I need to find a place to buy a dvd or combo drive that will fit the powerbook, and instructions on how to do it. I've opened up the powerbook, but haven't been able to get at the optical drive. I might need to take out the hard drive...but I don't have the right tools. Thanks for any help.