hippy,
you cant detach the door between the outer door and the door panel. its all one piece. you will just have to get your windows up and reach in there (que the bloody knuckles... trust me, they will bleed).
i used some stuff called supra bitchmen sound sheets, very good stuff!! its like putting a layer of tarmac in your doors, no rattles anymore and when you shut the doors you get a BMW style 'THUD'. just remember to wrap all your linkages and cables in the door with some sort of padding so they dont rattle too.