i am on a college network, and they have blocked all ports except port 80 (http). all information flows through a proxy server. i can't use iChat or MSN because they don't allow for proxy settings with a username and password. in fact, pretty much everything (except for web browsing and basic ftp) is restricted. is there an HTTP tunneling program for the mac that can go around these limitations? i would really appreciate any help you can give me.