www.autopia.ws is your friend. There is a book you can download that gives you step by step instructions on how to do that kind of thing. Very helpful. I've used the information in that book every day for the last year. Tons of stuff.

It sounds like you are describing swirls. For that you are going to need a machine to buff them out. Even if they aren't swirls, you can get them out with a machine. I suggest a Porter Cable 7424. You can pick them up in a number of stores. WalMart, Lowes, etc. Depending on the severity of the scratches you'll need a polish to take them out. AutoZone and PepBoys carry probably most of what you'll need.

check out Autopia and download that book. Its got everything in there.