Does anyone know what I can use to clean my digital camera screen without damaging it?

all you need is a soft damp cloth
followed by a dry soft cloth

Sandpaper and muriatic acid.

Try a lense cloth (dry)

The safest thing to use is a LCD cloth. It can be purchased at electronic stores like Best Buy or Radio Shack. You can also buy one from klearscreen.com. I have one and it is fantastic!

If you don't want to buy one, you can always use Damp cloth or paper towel.