How Do i become a TV show host/radio personality?

i want to host a show (like Passport to Europe with Samantha Brown), or become a radio personality...anything where im in front of the camera or have a microphone, i want to be the awesome verson of Ryan Seacrest!

What classes or courses should i take in college to get in this field? Communications?

Do something spontaneous. Audition for miss america or something. Audition for more, be comedic. If youre really host/radio personality material, it will work. Make people KNOW you.