Windows Media Encoder:
http://www.microsoft.com/windows/win...7/encoder.aspx
It works really well for global webcamming. Any number of people can see your feed at once, there's no special programs required to view it (just Windows Media Player or Winamp...something default) , and it allows audio. Just give people the IP and port, and they can put that into their favorite media player and it should work just fine.
I have used this personally. If you'd like assistance, just ask.