IndianaVX has a nice wright up in the "How To" section, but this one is a bit different. I am not sure it is as effective, because I can't compare mine to his. However, mine did work pretty good ... Sorry no before & after pics.
I went to Wal-Mart and found a silver package: Crystal View Headlight Restorer/Defogger MyHeadlight.com. I followed the instructions exactly, even timing the polish time and I am very pleased with the end result. This package cost me $20