Use furniture polish(Like Centurio), rub it hard like hell for a loooong time(Kinky, i know.), then you should wipe it of with a dry piece of cloth(The smoother it is, the better result.).
Is it good? If not, repeat the process.
When you are happy with the result you take some denatured alcohol on a rag, and wipe it off.
There are other polishers that you could use after this treatment to make it even glossier, but i don't really know if thats necessary.
I did this with a badly scratched guitar at work, and i actually managed to make it look like new! ;O
.. Oh, and if you have a lacquered neck thats full of grease and dirt that just wont come of with a dry cloth, try Centurio on it!
It removes the fat and polishes the neck, it actually feels like playing a new guitar afterwards.
Edit: Damn, maybe i should start working at TV-Shop?