I too have been having trouble with the Trojan-Clicker worm. ZA actually found four on my system and quarantined 3 of them. I tried to 'delete', 'delete on reboot' and 'rename' the worm but I got an error each time. Unfortunately, the only option left in ZA in 'Always Ignore'. So as I was clicking the Apply button. I saw that the 'Always ignore was set for this worm.
My question is: How do I reset ZA so I can receive a message when the worm is present?

Operating System:Windows XP Home Edition
Software Version:6.0
Product Name:ZoneAlarm Antivirus