video straeming

Our High school class has a project as follows we will be promoting our city and business with a live broadcast ever day 5 days per week, 2 hrs. per day. we have built a website as an example [login to view URL] as you can see the large video screen is for the moderator and the small ones are for guests. they will need to log in. We would like to use windows media encoder to broadcast as i think its the eastest. What we need is someone to enbed the players there are several free ones out there. And advise us oh to set it up it should look like a chat.