How do I become a firefighter?

I graduated highschool last year (2007), and I want to become a firefighter for my career. I know you have to be in good shape, which I am. But what else do I need to do? I live in a small town, so we have a volunteer fire department (meaning they don't do it as a full time job). I want to get a job as a full time fireman. I live in Wisconsin as well. Would I need to go to college for this? What courses would I have to take?