Populating combo box within a datagrid from a php script

I am trying to figure out a way to populate the combo boxes that are embeded in my datagrid. I can populate the datagrid fine from a php script and can trigger the check box event with the embedded check box. I am now wondering how to get the array from the php script to thje combo box.

Here is a link to my test project page that has what I have done so far and the files available for anyone that has a moment to look at it and maybe advise how i may solve this problem.

http://www.interactivewebconcepts.com/mytest/

http://www.interactivewebconcepts.com/mytest/mytest.zip