When you behind a firewall and MIRC, Kazaa or ICQ is blocked you can use a technique called http tunneling. Basically your program to an program running on your computer and the programs redirects the data thru HTTP. Download HTTPORT or SOCK2HTTP. It will run a SOCKS server on your PC which you can use to connect MIRC, Kazaa or ICQQ or whatever program you want to use that is blocked by the firewall. In mIRC or Kazaa go to settings and tell the program to connect to your SOCKS server. Server address is 127.0.0.1 - your local IP and socks port is port 1080.