It is sort of tricky the first time one tries to add them, so I did a tutorial for anyone else having issues.
Open a second browser so you can still see the steps below while you do it if that makes it easier to follow.
Download 5click_submit.gif. (Caution: This file may not be virus scanned.)
Download 4add_the_file.gif. (Caution: This file may not be virus scanned.)
Download 3doubleclick_your_photo.gif. (Caution: This file may not be virus scanned.)
Download 2browse.gif. (Caution: This file may not be virus scanned.)
Download 1upload-attachment.gif. (Caution: This file may not be virus scanned.)
