That's a tough one, are the scratches on the inside or outside? If they are on the outside, you can use toothpaste, or if they are deep, make a paste from scouring powder and water, and apply with a damp towel in a circular motion, rub lightly. If the scratches are on the inside, I really am not sure what you could do other than having some window film applied over the glass. The tinted film will have the additional benefit of eliminating the UV and reduce the solar buildup. I found out that the privacy glass does nothing to eliminate or reduce UV and heat, its strictly as the name implies privacy glass (looks cool). Since there are various degrees of window tint (darkness) you won't end up with windows so dark that you can't see through them at night, but it should cover the scratches. OF course, you have to be careful of the tint, it can be easily scratched as well. Hope this helps.
[This message has been edited by hip (edited 04-12-2001).]