I highly recommend that you become member of Taxi.
The A & R (Artist & Repertoire) Reps for the major labels receive so many submissions that they only listen to an average of about 20 to 30 Seconds of each (if they even listen to it at all) before ditching the track.
One way to put yourself ahead of the curve by like 1000% is to join an independent A & R company. One of the most popular these days by far the running Giant in this venue is http://www.taxi.com/.
In the event you may have already considered Taxi but not joined or for whatever reason dismissed it, I encourage you to re-evaluate that decision. Taxi is not a scam. The cream rises to the top there and get heard by people really in the position to make you or break you. If you are a member of TAXI and it hasn't worked for you yet, then you are probably not submitting your stuff frequently enough. If you are a member and are submitting a lot of stuff all the time and are not getting any deals, then your stuff probably really isn't really as great as you had hoped it was.
Next, Self Promote - Record a decent video of yourself and post it to http://www.youtube.com/ Then blog the heck out of your link.. MySpace, FaceBook, Twitter, Linkedin as well as every other forum and venue you can think of. Ask people to post it to their pages and send it to their friends if they like it. If you are really as good as you hope yourself to be, your friends will love your stuff and share you with their friends. Before you know it, you have 1,000,000 YouTube views and can shop yourself to the record companies and they will take you seriously.