Upon uninstalling the Free Anniversary Edition of ZoneAlarm Pro
I discovered that not only did it uninstall itself, it deleted from the registry the whole uninstall key under hklm\local machine\software\microsoft\windows\current version\. That really **bleep**s!!!!
I restored to an earlier point........exported the key..........uninstalled ZoneAlarm again and sure enough..........it deleted the key again.
I simply restored the key but good luck to those unfortunate people that have no clue about the registry or system restore or those people that were not using the system restore feature.
Also......this version could not check for updates because the version installed was not known to the software.

Operating System:Windows XP Pro
Product Name:ZoneAlarm Pro