I am very experienced in this area, as I had to take the trim panels off the door a multitude of times when I was putting my window back on the tracks. First, roll down the window of the side you're working on, then take a slotted screwdriver, and from the outside, pop the upper trim panel retaining pins out of their holes. Then, the upper trim panel should pop out after you get a u-shaped hook out from a hole on the side of the door toward the rear of the car. To remove the lower trim panel, remove all of the screws fastening it to the door. Do not remove the screws fastening the pull handle/lock button bracket to the door, though. Remove the plastic piece from around the latch release & lock, very carefully as it breaks fairly easily. You can then also unhook the mirror switch so that is does not get in the way. Then the workshop manual says to, with a long phillips screwdriver, remove the screws holding the pull handle to the door. I found this to be very difficult, and instead, using a slotted screwdriver, carefully popped the trim panel around the pull handle, leaving it attached to the door. This makes reattaching the trim panel much easier. Then pop the lower trim panel retaining pins out of their holes, and voila, the lower trim panel comes off. Be careful not to let the panel drop from the door as you're removing it, as the little door that can be used to close off the airflow to the door air vents may fall out, (I can speak from experience on that, it happened to me on both doors, and it took me a long time to put it back in the air vent) hopefully, this will not happen to you. There should then be only a sheet of plastic covering the insides of the door, and this can be carefully peeled back to reach the lock mechanism. When working on the insides of the door, be very careful not to cut your hands on the metal, as it is very sharp. (Experience again, Ow! Used a lot band-aids that day) Leather gloves are reccommended. Be careful when opening the doors with the panels off, as they are quite light, and can fly up very quickly. Also, when working around the open doors, watch your head! To put the panels back on, follow the same instructions in reverse. Pop lower panel retaining pins into holes, tapping lightly with a rubber mallet helps. Screw in a few screws at the top, then, using a slotted screwdriver pop the panel back around the pull handle. Screw in the rest of the screws. Reattach the mirror switch. Put the plastic thingy back on, then put the upper trim panel back on, and you're done. Glad to be of any help. John Yeoman