You can start by inserting a screw driver between the door and the lining. those hooks will start coming one by one. Dont get scared if you have to use some force. those are tight hooks, even if you break few, those are very very cheap from walmart.
Trick is to remove the door opening latch. you have to really rotate the lining to 90 degrees to take it out. That will need patience. so be prepared for it. Then slowly remove the water=proof liningfrom the glue and do watever you want.
CAUTION: if you have front door speakers, please do not forget to disconnect the wires.
Harp, January 2007