I am also looking for the same answer. I continue to research. However, the best answer I've found so far is at this address. Good luck and please respond if you find a better answer.
http://www.stonessoundstudio.com.au/stone/car-speakers-how-to-instal_p3.htm
get a haynes repair manual at your local auto zone. in the body chapter it explains in detail how to remove and replace the external door handles.