Clear a visitor's cache?

[Layne SMith]

I have an embedded swf file in my site that pulls in various variables and images dynamically about once every two days, sometimes more often.

But this is creating some caching issues.

Does anyone know of a way to either prevent the caching of my swf or to force the browsr to load fresh each time?

Thank you,
Layne

[Dismounted]

Generate an ID on-the-fly and append it to the swf url (?rand=GENERATEDNUMBER).