XML & Flash?

Hi guys,
Im looking to create a organisational chart by using flash to create movieclips which will be the boxes of the organisational chart and then the XML files will store the information needed to position each employee’s level and details. In this way, the chart should dynamically be created when the Flash connects with the info stored in the XML file to create the drop down structure of the hierachy organisation chart. Now all i need to know is where do i start??? :h: