Complex Flash CS3 problem - preloader in empty movieclips?

I am having a problem getting empty movieclip(s) to play in my flash movie. The empty movieclips are loading .swf files a server. I believe I need to include preloaders to each empty movieclip? However I don’t know how to do that…

Also I should state that the orginal .swf files that the empty movieclips are loading use components - “Loader”, TextArea", ComboBxo, and XML connector" to load XML content into them.

The external movieclips were working perfectly but all of a sudden they just stop working on my website.

To get a better idea of what I am talking about check out my website: "http://www.artectodesignstudios.com/artecto_flash/index.htm.
*[COLOR=Red](press the arrow keys on keyboard to zoom in and out on page)[/COLOR]

*I should also note : All the files pertaining to the website are in the same folder.

Again, it was working perfectly but shouldn’t just stopped! In fact if you visit

http://www.artectodesignstudios.com/artecto_flash/artecto_portfolio.swf

you will see that “artecto_portfolio.swf” actually still works when not loaded into the empty movieclip…

can anyone help me resolve this problem?