Don't use anything other than water. Get a paper towel and dampen it enough that it will get the screen wet, but not so damp that any water might drip. Never use other cleaners, even something relatively benign like glass cleaners. Many normaly safe things have been known to react with the antiglare stuff they put on the LCD, the soft plastic surface layer, or the plastic frame around the screen
haha... man, that is a good question. I haven't cleaned my laptop's screen yet and often wondered what I could use... now I know... H2O! I did wonder what other cleaners would do...I'm glad I never got around to testing them! thanks Ottomaton & RM95!