There are a couple of pointers that can save folks some trouble based on some issues I did encounter.
As of writing this, this component/plug-in does not work with Google Chrome. The JS that J!Dump uses to fire the pop-up is not successful in Chrome. IE8 works however, so go with that. Second, don't forget to publish the plug-in. I know, silly and it is stated in the instructions, but I gave up on the extension some weeks ago because I didn't follow those instructions. Once I worked through these environmental issues, I have found that Joomla! isn't as scary of a black box as I supposed.