http://www.versusmediagroup.com/kirupa/preloader/
Okay first off I am not going to even try to take credit for this great preloader. I got it from the Macromedia Developers site and its free there but I have been looking for one that had this much freedom and here it is.
When you open the ‘.fla’ file you will see, in the library, a movie clip called progress_mc. The great thing about this preloader is that you can put whatever animation you want and it will play it as the preloader and it will slow it down as needed. It also playes the entire movie clip so you see it smoothly go all the way threw your animation.
Again i did not create this code here is a link to who did…write him and tell him how much you love him!
http://www.macromedia.com/devnet/mx/flash/articles/preloader.html
