I found this out when I needed to fix the driver's window on mine. The obvious first step is to remove all screws. Look carefully, there is one or two hidden in the door handle part. Once that is done, get a flat tip screw driver to dislodge the plastic clips and it should pop right off.
Rip it off
How do you remove the inside driver's door panel on a 2000 Volvo S40?
On the driver side kick panel. Remove dash panel next to fuse box.
Using a screw driver, remove the screws and remove the clips from the door panel. Remove the panel slowly, remove any wire connections, and pull the panel off the door frame.
The 2000 Isuzu Trooper OBD 2 port is behind unmarked panel over hood release
Remove all screws and very very carefully slide the screw driver behind the panel and pull out.
As you sit in driver's seat, look just forward of your left knee. There is a little square panel that just pops off.
http://www.teamfocus.us/frontdoortrimpanelremoval.htm It even has little illustrations
i think you should buy special tools for it or ask a mechanic.
Read "How do you remove the interior door panel on a 2000 Pontiac Grand Am?" the answers are prettymuch perfect
Driver side
IT IS MOUNTED BY RIVETS. YOU MUST DRILL THEM OUT