there are already some very-well-working options, very affordable yet not free.
you can try EduPlanet.Network's publich videoconferencing room (we have some others, used for lectures) at http://eduplanet.net/extras/aulas/Zevulun.exe and after that, you are invited to get back to me
Video Services in current version
This discussion has been locked because a year has elapsed since the last post. Please start a new discussion topic.