Help! Preloader & Transitions for Dynamic Files Tutorial

i could use some help figuring out something. i used the scripting from the Preloader & Transitions for Dynamic Files Tutorial… this tutorial dynamically preloads and places external .swf files into a main .swf… i would like for the user to be able to not only use the buttons to load different swf’s but i would also like for the swf’s to cycle through in a sequential order if the user does not click a button. i thought perhaps the setInterval script would work, but i’m having a lot of difficulty figuring this out. i would appreciate any and all help.

thanks in advance…