Here's a snippet for loading an external image onto your flash stage.  Including progress of the certain type loading.

In ActionScript 2.0 there can be 5 steps a MovieClip can have:

This is the way a MovieClip is turned into a button in AS3.  This way shows the hand cursor when "buttonMode" is true.

Create a new shape on the stage and make it a MovieClip symbol (no need to have linkage setup).  Give it the instance name "button" as it will be referred to from the script.  On layer 1 add the following code and watch the output screen as you do different actions with the mouse.