found this in a forum - might help..
TrueVector is the invisible gatekeeper portion of ZoneAlarm. It's the guts of the software that actually controls and monitors Internet access on your computer.
TrueVector runs as a service or a background process, depending on your operating system. It loads at startup but doesn't show up in the task bar, and, for the most part, you will never see it.
Because TrueVector already is running, it's possible an older version of ZoneAlarm is installed on your computer. If that's the case, you should be able to remove it using Add/Remove Programs in the Control Panel.
If ZoneAlarm isn't in Add/Remove Programs, or un-installing it doesn't help, then stopping the service is the next step.
if you are running Windows 98, you should be able to press control-alt-delete to bring up the Task Manager. In Task Manager, select TrueVector from the list, and click End Task.
Windows NT, 2000 or XP users can open the Control Panel, then double-click Administrative Tools. In Administrative Tools, double-click Services.
In the resulting list, right-click on TrueVector, and select properties. In that dialog box, you can either click stop or set the service to not run at startup by selecting disable from the startup type popup menu.
Those steps should stop the service and allow you to finish the installation.
If you set the service not to start automatically, you'll need to restart before attempting to install ZoneAlarm.
