I am now content with my PowerBook G4, I'm upgrading it to 1 GB of RAM in a couple of days and my WiFi is all set up...But I have dirt on my screen from the previous owners that transfered over time from the keyboard to the screen and I have no idea how to get it off, Water did not work at all, I am currently keeping a piece of paper in between the keyboard and screen when I close it but I'd really like the dirt off the screen, Has anyone had any luck removing it?