Hi Tom and Dave
I'm not sure if this will solve your problems but you might try checking with your admins to ensure they have the filters appropriately set as to allow swf files (and the other files you mentioned) on the site. Even if you have appropriate permissions to up load those file types, its my understanding if the filters are not set correctly those files will not function.
Hope this helps!
(I remember you Dave from ISU btw nice to see you moodling!)