After trawling the AARNet archives I came across this video explaining video conferencing etiquette, its in a asf format which means it may not work if you click on it. The best way I have got this to work is to copy the whole url and paste in into VideoLAN media player in the network stream.
http://mirror.aarnet.edu.au/pub/aarnet/Videos/uw_style_videoconf_1300k.asf
Does anyone have any other videos like this we can post to NVCS?