[Latitude 28]

Pull the slide valance, first. It's held on by a french cleat that has 6 or so cross pins.

Then the cove moulding. It's screws (at the bottom)  should be visible once the valance is removed. 

It should be fully uncovered then.

As a side note on pulling the valance....when I gained access to the actual screws and removed them the valance was still rock solid to the frame.  I had to gently pry on the aluminum strip at the bottom to get it worked loose enough to rotate it away from the headliner.