How to get a Google maps SQL->XML->map marker tutorial to work in WordPress

Hi!
I am running into an issue with adapting a Google maps tutorial to function in a wordpress environment. I have the code on a stack exchange site, it will be easier to see there.
http://wordpress.stackexchange.com/questions/82710/how-to-get-a-google-maps-sql-xml-map-marker-tutorial-to-work-in-wordpress

The issues I am running into is my xml is not being read or found correctly. Let me know what questions I can answer for you all.
Thanks!

Kelly