Still Passionate and Confused

On a tangent, I finally nerved myself and plumbed in my DVD drive at the weekend. Unfortunately, I had to take out the CD/RW to do it, because although the bay beneath is empty there's a blanking plate in the metal case in front of it. It looks as though it should be removable--there are fracture lines, or whatever they're called, like you get in a light switch so you can get the wires in--but I'm not sure about this, or what would be needed to get it out. Any advice gratefully received...