Hey all,
I bought an Atari 400 computer from a toy show a couple weeks ago, it looked pretty rough (kinda like it was in a smoke filled room for 20 years). I decided I would take a chance on it and took it home for 15.00. I started to clean it with some vinegar based Windex and it basically just took off some of the dust that was on it. My wife said "why don't you try the magic eraser that I bought the other day." I chuckled to myself and said "why not." It worked unbelievably well! It took off all of the grime and basically made it look like new. I also used it on a WICO track ball that I had sitting around. The ball was stained and looked horrible. A couple swipes and it looked new again. You all may have already tried this, but I was impressed enough to recommend it. They are cheap to pick up (2 for 1.87). They work on just about everything except for shiny metal.