You can try to install ZoneAlarm, but usually one will detect the other and refuse the installation until the existing firewall has been removed. Personally, I'd just uninstall the trial version of Outpost and install ZoneAlarm. If it doesn't work out, remove ZoneAlarm and reinstall the Outpost trial...it will continue where it left off.
John
I want to make sure that the last update to Zone Alarm doesn't cause problems so I don't want to uninstall my trial version of the Outpost Firewall as of yet. Can I have both firewalls installed if I shut down the Outpost Firewall and prevent it from loading at start up so I can check out the Zone Alarm Update?

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