First, make sure that you are not using a proxy to surf the web. If you're using a proxy, then you must setup http-tunel with the proxy address and port.
in internet explorer: tools->internet options->lan settings
and tell me what you see
If it's not that then it may be a block
From the http-tunnel website:
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My service isn't working, did my ISP block HTTP-Tunnel.com servers?
HTTP-Tunnel.com has numerous servers hosting HTTP-Tunnel's services. The first test to see if your ISP has blocked our address/domain name is to check whether you can surf to the HTTP-Tunnel web site. Assuming that you are reading this from HTTP-Tunnel.com, you must have passed that test. Furthermore, if you wish to test your connection to each of the individual servers, visit the Server Status Page and click on all of the servers.
By clicking on the above link, you should see the message "Connection test succeeded, HTTP-Tunnel should work fine". This is a connection directly to our server software.
Also please try to surf our web site via
https://www.http-tunnel.com. People have suggested to us that even though their ISPs have blocked http to our servers, secure http is still available. The web page may be available if you try to access it this way, but you will still be unable to use HTTP-Tunnel itself.
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These are links to connection tests for every http-tunnel server, try to open them in your browser to see which one your ISP blocked.
http://paid3.http-tunnel.com/ConnectionTest.htm
http://paid4.http-tunnel.com/ConnectionTest.htm
http://paid5.http-tunnel.com/ConnectionTest.htm
http://paid6.http-tunnel.com/ConnectionTest.htm
http://paid7.http-tunnel.com/ConnectionTest.htm
http://paid8.http-tunnel.com/ConnectionTest.htm
http://paid9.http-tunnel.com/ConnectionTest.htm
http://free3.http-tunnel.com/ConnectionTest.htm
http://free4.http-tunnel.com/ConnectionTest.htm
http://free5.http-tunnel.com/ConnectionTest.htm
http://free6.http-tunnel.com/ConnectionTest.htm
http://free7.http-tunnel.com/ConnectionTest.htm
http://free8.http-tunnel.com/ConnectionTest.htm
http://free9.http-tunnel.com/ConnectionTest.htm
I gotta go, i'll talk to you tomorrow...