Everybody, the solution is to use the http://localhost:86/broadcamjpg.html?src=1&speed=1 for real-time video chat (low quality), whereas http://localhost:86/broadcamauto.html?src=1&speed=1 gives you a better video but a considerable delay, unsuitable for live two-way communication.
Out of all the Intranet video chat softwares I tried today (about 8-10 top ones from Google search), Broadcam is the best and easiest from installation to get operational - and actually worked. Hats off to the guys who have developed this,
Thanks to all who have viewed my question and may have attempted a solution,
Joy