The first thing to do is link up with other people who could help you produce. You can do that yourself (friends? buddies online?) and/or you can search through members who have already registered on the site. (Hint: try sorting the member list to find out who produces music, who likes to announce, etc)
Next, you need to figure out what you are going to broadcast. Maybe you already have an idea - that's great! Write down your script.
Finally, record, edit, and upload.
[Being written! 6.30.06]