Working on the guess that since installing ZoneAlarm, you may have ticked the "remember box" just before refusing to accept some connection, ZA now rejects any attempt to access that item.
A simple test would be to uninstall ZA. Use the program's own, via Start > Programs > Zone labs, reboot and then see what happens. If you are lucky everything will be back to normal, and you can install ZA again.... carefully.
Just to be gloomy, it may be something worse, but you have to try simple methods first