Look at this, for 16 bucks you can throw it away when you are done. My suggestion will be to get a gallon of lacquer thinner and rinse the gun throughly between uses... It may last years that way!
http://www.harborfreight.com/cpi/cta...emnumber=91009
You will need a decent sized compressor, but most will do. As for the paint, your local auto supply will most likely carry paint, or you may have an auto body supply place. Call around.