Regular web hosting (http) serves pages and does not allow live video streaming or live interactivity.
A special hosting on different protocol (rtmp) is required for users to stay connected to a server, interact and stream live with minimum latency.
This software has special requirements (for the video streaming and live interaction part):
http://www.videowhisper.com/?p=Requirements
All editions can be downloaded and installed in free mode (with some limitations and ads) for trial and limited usage, if you have compatible hosting (web + rtmp).
As commercial service, VideoWhisper.com provides compatible hosting and full mode licensing with setup assistance.
For assistance, contact VideoWhisper staff from
http://www.videowhisper.com/tickets_submit.php , as forums are not monitored.