Learn to make an good preloader.
Maybe not so good, but you can make it good :).
Opss... Sorry about the fu**ed up preloader! Fixed the ActionScripts!
Learn to make:
-Showing total file size in bytes
-Showing how much bytes loaded
Hope it's useful!
If it won't work, check later,
I'm trying to pdate it till it's working.
But, the site freaks when I'm uploading...