Almost everything for windows server is a plugin, not an integrated component. Check out these --
download.camfrog.com/serve
r.phtml
www.camfrog.com/help-chatrooms.phtmlwww.flashpioneer.com/chat/help/RED5_install_w.htmEven Microsoft MSN messenger video chat is a web based chat like skype.
Are you talking LAN based chat here, as opposed to internet chat? Is that the difference?