I want to know the same so far i have established that the bottom and sides pop out easily with a screw driver and then once there is a big enough gap with your fingers. There are about 10 clips around the edge of the door. But i still do not know how you detach the upper part from the rubber seal along the bottom of the window. If you ever work this out please let me know hope this was of help to you.
Sparkie003, April 2009
