I can't tell you how to get it as shiny as some of these folks do, but mine came out pretty **** good for doing it myself. First I degreased it, then used some comet and some real fine steel wool. This worked for me... It's not chrome looking or anything but it does look like highly polished aluminum. I didn't put anything on it after that, a clean rag keeps it shined up nice.
Hope this helps, Shayne