Tried ProxyGet, still can't connect... any help?

I'm on a university network in Japan, and Firefox Portable loads just fine, but can't access the internet at all. I tried using ProxyGet and was told that all the services were directed through proxy port 8000, except Gopher, which was localhost port 1. I put the port numbers into Firefox Portable, but no go -- I still can't access the internet. Is there anything else I can try?