QuickTime can already open any Flash file (.swf) if it is "published" as version 5, or lower. Publishing is a feature found in the export dialogs found in the Flash authoring software.
QuickTime can't open .swf files published using 6 or higher. If you are the author of the files you need only re-publish to a lower version number.
Thanks for the reply. Is there a way to revert back to five if I already have seven? If not, does anyone know of any programs that can convert swf to avi which I can then convert to quicktime? All the programs that do this seem to only be made for PC.