Preloading Dynamic Pages

1

First off I want to thank scotty for all his help with my pageflip problems awhile ago, because of him my girlfriend couldnt be happier with her site. Now I have come across a dynamic page flip that draws off external swf or jpgs, I am using swf files beacuse I need it to open a new window when clicked, My question is to show a preloader do I have to add a preloader script to each external swf file or do I add it to the main .fla or swf file that calls on the external swf pages? any help in this would be great right now it takes about 1 min to load and I want to show something while it loading