1994 Mitsubishi Montero DOOR LOCKS

I can't open the rear cargo door. The power door locks work but the cargo door handle won't allow me to open the the rear door. I hear and feel the power door lock inside the door when the lock button is depressed, but the handle is loose and doesn't seem to be connnected to the openiing mechanism. I can't find a way inside the door itself to see the mechanism and fix it. My question is ' How do I gain access inside the door to fix it?'