flash data integration: I am working on a page the allows the user, once logged in, to upload
information and a picture. The picture is saved as his/her username, and if
they upload a different picture, the old one is still displayed unless they
leave the site and come back 10+ minutes later.

I tried the HTML no-cahce headers and they don't even help load a new
(up-to-date) version of the main movie.

This should have an easy solution, that Adobe should have addressed if they
expect flash to be capable of being a dynamic site with user interactivity.

Any help on how to manipulate Flash into preventing it from using the cached
files would be great, thanks.

See if a cache killer will help.