XML: Movieclips and URL's through XML

I’ve been running into all sorts of problems implimenting the getURL using XML. I have a set of menu buttons set up using XML, each load dynamically from the XML file, including a title property for the actual button. My problem is I have no idea how to assign a URL that I set in XML, to an instance of a movieclip which I create using flash and XML.

Does anyone have any tips about how to go about adding a URL property to an object I create using XML?

(I just discovered Kirupa, and it is freakin amazing, just the flash resource I’ve been looking for!!)