hi Jeff. there is one screw on either side of the lamps holding a cover plate on each side of the light. remove these plate and you'll see a screw at each corner of the light. these hold the light in place and removing them will enable you to pull the light out. the screw in the center of the outside of the lights is the adjustment screw and has nothing to do with the removal of the light. that should help you get the lights out.
btw, cool avatar. you got lucky
