Flash Math made a nice applet that shows how to use an external XML file to load data into a Flash movie at runtime. You can see 2 examples one at fm site and other at mathdl. Both source codes are available to download.
A nice applet example using an external XML file
About the Author: Carlos Pinho
A father, a husband and a geek... Carlos was the founder of projects like The Tech Labs and Flash Enabled Blog. He is the founder of TekTuts He is passionate about technologies. Their main skills are in analytics, transport & logistics, business administration. He also writes about programming resources, trends, strategy and web development.