How do I unblock files from avast?

Hi
I installed avast a few days ago, but now it seems to block the internet connections for some of my programs, the firewall perhaps. how can I edit this? (the program is ventrilo).
Appreciate any help
thank you in advance!

Well avast isn’t a firewall so doesn’t block programs, it scans content and alerts to infection (at that point it would block the execution of the file).

So what are these programs ?
What are the sites or tasks that these programs perform ?
Are there any errors displayed and if so what are they ?

Have (or did) you another AV installed in this system, if so what was it and how did you get rid of it ?

oh okay.

The program that doesn’t work is Ventrilo, if you’re familiar with it; then when I press “connect” to connect to a certain channel, it stucks on “MSG: Synchronizing”.
the program is used to enter a channel for voice chat, but it won’t connect to the chat channel.

I had the standard windows xp AV, Norman antivirus. But I uninstalled it when I got avast, I don’t recall how I uninstalled it, but probably through the “add/remove programs”

I noticed now however, that I still have the windows-firewall in use. I made it allow the program, but it still didn’t work.
I turned the firewall off, but that didn’t work either.

Which site are you trying to connect (maybe post an edited link to it, like hxxp instead of http, to not post a live link to malware)?

Which version of Norman did you have ?

There is an uninstall tool on this page.
Uninstall Norman Virus Control / Norman Internet Control http://www.norman.com/Support/Knowledge_bases/Norman_Virus_Control/Windows/installation/11640/en

Using “add/remove programs” alone is not enough to uninstall the registry keys and other things left behind.

Please follow David’s advice above.