Preloading issue

Hi, I am working on a QueueLoader class that loads four types of data: swf, images and xml and a custom one section. This class section consists in three files: the clip (swf), a preview image and a xml file.

I want it to load in background while the user navigates through the different sections. The problem is that I want to preload the swf and the image file and have them ready when the users goes to the section, but not loading and showing them as they are loaded (they share the same loader).

How can I do this?