make sure that you've checked with your web host regarding bandwidth consumption. If your streaming content becomes in any way popular you might find yourself presented with a hefty bill for the bandwidth you've used over and above your package limit.
I think you should try 1AVStreamer. 1AVStreamer streams audio and video from your webcam embedded in a page inside your own website. It is all automatic and very easy to setup. The PC Desktop, TV tuners and DV cameras are also supported. The program also broadcasts audio alone. if you dont want the audio you can stream your webcam via FTP. 1AVStreamer also does that.