ActionScript 3.0 :: XML Driven Menu Into Flash

I've been hunting for tutorials on XML driven AS3 menus. I've found some really cool stuff, but nothing that does what I want, and most don't really explain the "hows' involved in getting the XML into the flash. I want to dynamically load menu buttons based upon an xml document in horizontal fashion with sub menus that load 10px down and to the right of the main menu button. With each item in the sub menu filing to the right. I'd also like to have that light up bar track the main buttons so that as the mouse moves over the bar slides to it.

Here's the code for the bar:
ActionScript Code:
import fl.transitions.Tween;
import fl.transitions.easing.*;
button_mc.buttonMode = true;
button2_mc.buttonMode = true;
button_mc.addEventListener(MouseEvent.ROLL_OVER, hover);
button2_mc.addEventListener(MouseEvent.ROLL_OVER, hover);
function hover(e:MouseEvent):void {
new Tween(bar_mc,"x",Strong.easeOut,bar_mc.x,e.currentTarget.x,1,true);
}

Most of the XML driven code I have found obviously doesn't have a static instance name and use addChild()