Then I created my second Joomla website and eXtplorer was one of the first components I installed. The install seemed to work perfectly but upon trying to run the program I received an error "The ExtJS Library could not be found..." and the program terminates. I researched the problem on the developer website and found a few threads with others having this exact same problem going back to September 2007. There have been no solutions to the problem. By the way, the two Joomla installations are hosted on the same server with the same version of PHP and everything else is the same except the domain name.
For those of you lucky enough to have the program actually work... YOU WILL LOVE IT!!!