Tutorial + preloader

But only one thing irritates me, like many other people. When its busy to load an extern swf in a movie. You should see the loading… thing. I would like to have loadbar. I know how to make one, but I dont know how to implement it in the .swf. Can someone gimme a good example or script how to do it?

here’s the link of the tutorial where i’m talking about:
http://www.kirupa.com/developer/mx/preloader_transition.htm