FlashGuru's Preloader - How to use?

Can anyone advise me on how to tell this preloader which MovieClip to load: http://www.flashguru.co.uk/generic-preloader/

FlashGuru mentions that: You can pass the name of a movie into the preloader movie using the object/embed tags and it will preload it.

I’ve no idea how to pass the name of the movie using the object/embed tags.

Any help appreciated.