WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
Open the sunshade (1).
Close the sunroof window.
Fig 1: Removing Sunroof Window Screws
Courtesy of GENERAL MOTORS CORP.
Remove the sunroof window screws (2) from the sunroof track.