I could be wrong, but I don't think CF has a built-in way to do this. You could use basic javascript, or an animated gif to _simulate_ a progress bar. I know its possible using ajax, activeX controls, etc. But other than that, I don't know of a simple CF way to do this without using Flash.
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by: gdemariaPosted on 2007-05-09 at 12:28:13ID: 19059681
This is actually a pretty popular question; there are lots of different approaches.
I maintain that the easiest way to do it is to have had hidden DIV on the form page, when the user clicks the Upload button, use onClick to display the contents of that DIV (something like processing, please wait..). This will remain on the screen until the file is uploaded and the next page is ready to display.
The other options include submitting to a "middle" page which shows the please wait message and uses a meta tag redirect to resubmit and upload your file. I don't see that buying you much. Let me know if you want to that route.