Sorry, the video-link was interrupted early on in the presentation. I ran a backup video-recording, so here is the link to the video recording of the presentation I did for the TARI conference. You need Realplayer, and streams are for modem 28k, 56k and ADLS 256k. As the camera was behind me, the video signal is not interesting, but the audio is loud and clear. Watch this in conjunction with the powerpoint file above and you get the idea.
I had to keep this short, so I had to leave out many bits you might want to ask questions about. Feel free to do so in the discussion forum here and I will reply.
Hope this helps