If you have the confidence give it a crack mate, if you have no idea theres a book HOW TO PAINT YOUR CAR its 35 bucks at most book stores
like jamie said buy or rent a compressor and spray gun with 1.8mm nossle if i remember correctly and make sure your car is preped good (no dents or rust)
spray it in primer that will be your trial run, make sure u add the correct amount of thinners to your paint and if u don't want to attempt it save some more money and get some quotes and compare I'm sure theres someone out there that will help you out mate good luck :(