You should try what I told you in one of your other threads...because it seems you already know what your looking for. Post the job on
http://www.scriptlance.com/ or
http://www.guru.com/ You have some excellent programmers in India and eastern europe that will do a job cheap.
What I did once when I wanted a job done, is google something like webcams in google...and just check out every link...find something you like and perhaps email that site and tell them you are looking for a programmer, do you have any recommendations. I just searched on yahoo "cam social sites" and found
http://www.stickam.com/liveStreams.do