I have three jpg's of the correct size that I am unable to upload to my current ad in "cars for sale". I get a message "upload error" saying that they have already been posted. The old ad has been removed (Monday) but the system still won't let me upload the photos.

Help, please!

This is done by design to prevent our disk drives from filling up with multiple copies of the same picture.

You need to delete the old picture before you can upload it again.
This can be done in the attachments section of the UserCP. GO HERE (http://www.mercedesshop.com/shopforum/profile.php?do=editattachments).