there are so many ways to do it, it all depends on what you want. First what do you want to use for your video? Some people still use cheap webcam software, less than a hundred bucks.
You can use Windows Media streaming video at broadband speeds or Real Video. How does he want to charge people?
By the minute? Blocks of time pre-paid?
here's an off the shelf product that tons of webcam sites seem to be using these days. most of them with no idea what they're doing but the software seems pretty good.
http://www.firecrackervideo.com