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.