Javascript nobody resolved yet

Hey,

I'm have googled untill my fingers bled, but I can't find out how to load automatically an external flash file inside a mx.controls.Loader in Flash.

Links : I want to do like this in my computer :

http://ksa.obeikaneducation.com/books/science/swf/loader.html?SASC_0102_0402_LA01.swf

I have all elements of this page but i can't make it work
I want you to give to me a source of what to do exactly


Thanks, Picka