I bought a buffing wheel from Harbor Freight on sale for less than 50 bucks. I then used it with buffing compounds that I bought from ACE hardware (they were cheapest in my area for that). Using tips from this website Buffing Website I was able to get a pretty nice end result. My drip rails were not badly scratched so I did not need to sand them, the buffing and polishing took care of what fine scratches were there. I then hand rubbed in some Mother's liquid Metal Polish and buffed it out using an old dremel shoe buffer (was recommended by another moparts member). The lower front windshield molding has a some heavier scratches and I'm sure I will need to do some sanding before I try to buff it.

It wasn't hard, just time consuming. The more you buff and polish the nicer it gets. You have to be careful and be in the right frame of mind to do it so you don't hurt yourself or damage your trim. Hope that helps, sorry it took me so long to respond. Good luck!