I assume you mean a pre-loader that shows a progress bar and
then launches the movie?
I found some tutorials on the Net how to make one and got one
to actually work.
But maybe the easiest thing would be to send you a flash file
with the preloader in it. It uses the first two frames of a movie.
You could use that as your base and build your movie after that, or
insert it into a pre-existing movie. My preloader gives a progress
bar and also indicates the percent of the movie as it loads. You
can change the text styles and color of the bar and so on. I got it
from a tutorial, so I think it is okay to share it. I just can't
remember which tutorial (I've read so many!) I found it in.
If you are interested, send me an e-mail or Private Message.