Can't connect to my Ventrilo server since installing anti-virus software.

I'm fairly computer literate with most things but when it comes to ports, and routers, and firewalls i'm pretty much a noob.

My friends and I have been using Ventrilo for a few weeks with me running the server from my computer. A few days ago i had to put norton antivirus on my computer to get ride of a virus. Ever since then i can't connect to my Ventrilo server and neither can anyone else. I uninstalled it and everything but it must have changed one of my windows network settings. The windows firewall isn't up but something is blocking stuff. Anyone have any idea how to make stuff like that work again? Thanks.