I know jewellery can be taken to certain goldsmiths and jewellers for them to do that for you - Im sure that if you asked a local one to you, that they'd be able to point you in the right direction. Eventhough you provide the metal, its still quite an expensive thing to do in my experience - it cost me �120 to have two bangles made out of my own gold!
The other option is to speak to a local college or careers advice who might be able to steer you in the right direction of a course to learn hoe to do it yourself.
Good Luck