Hm, you seem to know absolutely NOTHING about the application process. It says you're a junior member, so I find it hard to believe you haven't come across this kind of info on the SDN forums yet. Have you spoken to a pre-med advisor or read anything about the process??? What exactly have you been doing these past 2 years?
Just in case you're serious, AMCAS is the application website that almost every med school uses. Go to the AMCAS website, start up your application and follow the directions, they're pretty clear. Seriously, how did you even register for the MCAT without knowing what AMCAS is? Do it RIGHT NOW. You have to fill out your personal information, every course you've taken, list and describe all your EC's, type out your personal statement, request a transcript from your college and have it sent in so they can confirm the courses you listed are accurate, and make sure your MCAT scores get sent to AMCAS.
If you don't mind, could you let us know what your overall GPA, science GPA, and EC's are? That way we can let you know if it's worth your time rushing through the application. Meh...not to be rude, but I really hope this is a joke.