My PowerBook G4 is going on the two and a half year mark. Though I take excellent care of it, I do take advantage of its portability and bring it places other than my home desk. In this transportation, it's gotten its fair share of scuffs and scratches.

A few months ago I purchased an incase sleeve that has helped tremendously in preventing new cosmetic damage, and I would HIGHLY recommend getting a similar case.

However, I still have these scratches and scuffs that I'd like to get rid of if possible. Is there any kind of polish or treatment I can give my PowerBook that will return the brushed aluminum to its original condition? Possibly the most worrisome damage is to the corners, where (pre-incase) my backpack polished the aluminum to a shine.

Any ideas?