If you go to an art supply store you can get a pack of 'newsprint', which is newspaper paper, only its blank.

Use that and INVISIBLE GLASS, an aerosol product by Stoner Chemicals. Magazines have done reviews of this stuff, and its EASILY the best glass cleaning product I've ever come across. To relate to a previous post, I've also had ARMOR ALL GLASS CLEANER, and man, this Stoner product kicks Armor All's ass in. It's really that good! Try it, you will not be dissapointed.

- Ca$h