My Powerbook G4 1.5Ghz 15" screen latch is no longer working. The screen will close, the latch will pop down, but it won't lock. I don't have Applecare and my warranty is past it's year. Where can I get this fixed? Will Apple fix it for a price? Or a third-party company? Who has the best price for this? Since the screen won't latch, I can't sleep the computer when I carry it to and from work, which I do everyday.