I've done mostly every step involved in this faq, except that after the rubbing compound, I used 2 coats of Blue Magic's "plastic and plexiglass cleaner and light scratch cleaner".
It seemed to really do a great job of cleaning up and making the plastic shiny. It's really just an even finer rubbing compound. You can also use this stuff on scratched cds in case you're really sloppy with them like I am (rub from inside to out!).
On another note... using toothpaste (note: paste) to remove scratches works too on cds and presumably on the headlights, in case you don't want to buy this or don't find the product.
Hope I've aided somehow.
