okay. . .i'm doing things that worked on my old download of mirc 4.5 something, but it doesnt work now.

I'm using Proxy from anaolg x to serve an internet connection and its running zonealarm basic as a firewall

when i go to the firewall section of the MIRC connection, i've set the address of the serving proxy computer, but nothing works. . .what else do i need to configure? On old MIRC i just punched in the address of the proxy machine and it poof worked. . .