Video conferencing enabled web site

Hello,
I am developing a web app that needs to incorporate the use of video conferencing...possibly using netmeeting if possible.
I want users to have option of starting a video meeting within my web app?
I have seen some websites that use netmeeting, and when activated the main 'netmeeting' that you see when you launch it normally, appears in the browser window, that user can interact with this of course.
Does anyone know how to do this?
Do you know if there is some netmeeting plugin tool, I could use?
OR any feedback on how I would do this would be greatly appreciated.

See if this link from Microsoft helps you out any
http://www.microsoft.com/windows/NetMeeting/Corp/reskit/Chapter6/default.asp
Eric