Hi Scott
The error messages you are getting normally relate to a conflict with another program.
Never remove folders from the Program files folder, only use the Add/Remove programs, or its own uninstaller.
As well as typing the error massage into Google (Always a good first step) check on the Microsoft Support site and the Zone Alarm support site.
The best move is to restore your computer to a time before the problem occurred. (If it occurred with more then one computer, then there is most likely a problem with the downloaded files) Check the web site to see if any problems have been identified, if not you can try again (Just make sure you disable any program that is not required to run the OS)
Hope this helps

Bill