Normally, all ports, excepting the HTTP Port 8080, are closed by a corporate firewall. Sometimes the Socks Port 1080 is open.

If your Socks Port is open (simply try it), you can use the free program SocksCap32 by <a "www.socks.nec.com">NEC in USA</a>.

If not, then you need the free program <a "http-tunnel.com">HTTP-Tunnel</a> additionally. HTTP-Tunnel uses the Socks Port 1080 to communicate with the applications. Currently their servers move to another ISP. Therefore their site and/or servers may be down...

Gnotella does not support Socks. Therefore you will need SocksCap32, too. Give it a try!