Prevent Browser Caching

Hey All,

I have a flash component that has a login feature, every time I sign someone into the system I manually enter there login details into the .swf and email it to them. Problem is, if they have already visited teh site they have the old .swf with the incorrect login details cached in their browsers and are confused as to why their new details don't work.

How can I make sure that the movie will load itself without being cached? I realize I can tell them to clear their cache, but this is not the most professional solution as the end users are not necessarily expecting anything less than utter simplicity.

Thanks for any help.

Best,

SDO