How to host and moderate a live chat session?

Hi all,

I'm looking for suggestions on how to set up a moderated real-time question and answer session. Unless I'm wrong, it doesn't seem like the WPMU Chat plug-in can handle this .. I don't see a way to moderate the users' questions or terminate them if they violate chat etiquette.

Any suggestions on how to set this up via Wordpress? Ideally, I would like to have questions submitted via chat and the answers provided via video (this could be two separate plug-ins, of course).

Thanks in advance,
Mark