[Justin@Athens]

The plastic rivets will just pull out with pliers, or if you choose you can drill them out. You will have to replace them anyway so don't worry about damaging them. There is a little hole that goes through the center of them, it is hidden by a little cap that goes in the very center--sometimes they fall out or were never put back in by a PO. They look like drywall anchors without the center cap installed.