Well part of the mystery is solved, I think.
for the AJAX library, I went to http://www.xajaxproject.org/ and downloaded the latest stable version and installed it in the root folder. I changed the name of the folder from "xajax" to "ajax" to match what is coded in jscript_main.php for this module.
When I go to the Attributes Controller page in Admin and click on the link, I still get the 404 Error. I noted that the URL it is trying to access is "http://localhost/admin/stats_attr_model.php". My root is one level down in http://localhost/newzen/ and that is what is encoded in jscript_main.php for
Code:
var xajaxRequestUri="http://localhost/newzen/getPricefromcomboID.php"
So I don't understand why it cant find the file properly. If I manually change the URL in the browser window to include the "localhost/newzen/admin..." then it finds the file and shows me the ArticleCombination window.
Help needed!
Maury