It would be good if you could find out how the admin blocked p2p. You should be careful though. If they have made it an official rule employees are not to use p2p then it really does make it risky for you.

Give us as much info about the computer & network set up as you can.

1. OS version? (eg: Windows 98)
2. What firewalls you have?
3. ram?
4. HDD space available?
5. Connection type? (eg: dialup, broadband, cable, etc.)
6. Modem & router brand name & model numbers?
7. Where are you trying to connect from (home, school, work, etc.)?
8. What version of Java do you have? (Go to LW's menu Help>About LW...)

You can set up firewalls for LW here: http://www.limewire.com/english/content/firewalls.shtml

Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ The page should say ‘Test Page was a Success’. What happens when you go there?

If the page was a success then it means they're not blocking port 6346.

I don't know about Http-Tunnel other than vaguely hearing about it. Another member/mod would need to comment about that. Another option is A Fix for those whose ISP's block Limewire which is using proxies.