[fubar42o]

well, you could dampen a cleaning cloth with a small amount of window cleaner and wipe the screen down. If you're talking about the dust that occasionally gets stuck underneath the screen, the only way to remedy that is to take the front of the PSP off and clean the dust out. Or if your screen is very scratched up, you could order a new faceplate from DECALGIRL.COM then order a couple of screen protectors as well. When they arrive in the mail, attach the screen protectors immediately before any dust has a chance to settle on the new screen. Now all you have to do from now on is wipe the screen protector down very quickly and the screen will always look brand new.