Well.. when I did mine it was night and day better. Some people asked my wife what I was doing to the car because it looks brand new..LOL! All I did was wetsand with 1500 grit and then buffed it off with cheap Turtle Wax. I'm sure it could look 5% better if I used a 2000 grit and a plastic restorer, but I'm tight on money.
Here was my post.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=aesthetics&Number=729096&page=2&view=collapsed&sb=5&o=all&fpart=1
