"Microfiber" clothes
I suggest using 'microfiber' cloths. These are specially made to remove finger prints and oil for the surface of glass and plastic lens in glasses. You can get these from any eye doctors office , and most have free samples-but if they don't they only cost about 5 bucks. They are re-usable!! Just wet the cloth and gently wipe down the screen (you usally don't even have to wet the cloth)!! When it is dry i just set mine on top of my keyboard and close the screen, and the cloth keeps it from getting marks on the screen!
These are excellent items, and i recommend them to every laptop owner!
PowerBook G4 (400) 10 gigs (soon to be 20), 512 RAM, and a wonderful 15.2' LCD screen!
