If you can't get your k/b clean, make sure you buy the right model k/b, since there are 3 to chose from (http://www.dvwarehouse.com/Powerbook-G4-Keyboards-c-253_238_244_544.html) for choices. I broke one of my keys off, and as the k/b had been subjected to soda, dirt, cat hair, etc. anyway, got...