On the main menu header in VBulletin there is normally an uploader button, but we don't appear to have one? this is in addition to the icon with mountains on it.
to use that feature click on the image in the bottom right hand corner of the message you are reading and it activates at the bottom
if you click where i said it opens that you have Quote at the bottom of this message then two papaers.. the right of the two papers opens that box