The problem with zonealarm and your network could be that you havent put your network ips into the Trusted Zone. Restore Zonealarm control centre and then go to the Firewall section and click on the Zone tab. You should be showing your network ip range. If not then you need to add it. You will need to know the ips of all the computers in your network then you can just enter them into the Trusted Zone and add the network name in the description box.
If ever you lose access to the network this should be one of the things that you should check as i have experienced loss of settings sometimes with zonealarm.
This thread is now locked and can not be replied to.