ActionScript 3.0 :: Making An External Preloader

In order to learn the ins and outs of preloaders in ActionScript 3.0 I've been working on a program in Flash CS4. The problem I'm having is that the preloader is not throwing/recieving the Progress and Complete events.I decided to make the preloader an independant class and put it in a seperate package from the document class. I also made a second independant class to serve as a progress bar, which the preloader includes. Basically the structure of my program is Flash File>Document Class>Preloader Class>ProgressBar Class.So far the Document Class creates the Preloader and puts it on the screen (a black box with a progress bar on it so far, I'll add text later). What I'm working on now is getting it to actually preload, so that on the Progress events it increases the size of the bar untill it's completed, and then puts a play button on the stage when it recieves the Complete event.The examples and tutorials I've read on preloaders suggest that all you have to do is monitor the loaderInfo property of the stage object using various events. In order for the external Preloader Class to access the loaderInfo property of the stage, I pass the stage.loaderInfo property to the external Preloader Class constructor as an argument, and the _targetLoaderInfo property of the Preloader Class has that argument assigned to it. I then set up the Progress and Complete events on the _targetLoaderInfo property, expecting it to pass through to the loaderInfo property of the stage. It's not working.