Shoutbox

I have a similar problem. I am using Messenger 7.5 from behind a University firewall. The problem is Messenger uses certain ports for video and audio that are blocked by the University on the firewall. However, it is possible to video conference through Yahoo! Messenger as it uses different ports, but who uses that rubbish anyway?

I was wondering if it is possible to get around this by maybe forcing Messenger to use different ports for video conferencing. Any help on this would be so much appreciated.