Just fixed my non-functioning interior rear passenger door handle.
extremely easy.
i found this thread, which helped me find the second screw that stumped me for the first half of the project:
http://www.toyota-4runner.org/audio-...ght=door+panel
As previously stated, there are two cables attached to the handle/lock mechanism. They look exactly like bicycle brake cables.
The one with the green bracket (this is how it attaches to the door skin/door panel. keeps the cable sleeve in place so the cable can function properly) was not connected at all. Simply place the end of the cable back in it's proper place, and make sure the "bracket" piece is held in place as it should be.
Good luck!