Remove scratches?

I may be getting a powerbook and it's pretty scratched up on the outside of the computer and bottom, is there a way, or something that I could buy that would remove the scratches?

Also, it is missing the " ~`" Key, right below exit, is there somewhere I could go to get a spare one?

Okay so basically here's what is not working properly:

Broken latch, missing `~ key. And the battery is shot.

I would be interested in where to find these things..

Thanks again!

P.S. It's a 12.1" G4

the PERFECT site for you!
http://www.powerbookmedic.com/?gclid=CPaW68vuo5ECFQUolgodJ21LeQ

You could buy one of those skins or the plastic or leather hard covers for the top and bottom. I love mine. Amazon sells them fairly cheap.