You are planning to join one of the most sought-after and competitive occuptations in the world.
First off - I wouldn;t bother with a MySpace page - you may run into copyright issues if you play music on it, and the people you need to impress don't bother looking there for new talent - it comes to them via demo discs and, more often, via recomendation.
Getting a job is largely a matter or luck, right-place-right-time, and more luck. That's taking as read the fact that you have the right technical and vocal skills, a bright personality, and a professioanl approach.
Best of luck - I'm afraid you will need it!