You need to remove the 2 rear quarter glass windows also unscrew the handles in the roof ,remove the boot and door rubbers ,then peal the headlining away from the window and boot appertures carefully ,the rear of the headlining will then drop and you will see a metal rod (may be two metal clips holding it up remove these) ,you pull this to the front of the car and it will rotate down ,ease it out from one side and repeat the process on the other metal bars ,if you need to see more wind back the sunroof and remove the seal and the headlining around the sunroof can now come away,just reverse process to fit back in