I have a 2002 Corolla, and if it is anything like mine, follow instructions below.....
Take the arm rest on the door off (it pulls off easily). There should be two screws where the armrest is. Unscrew them, and then take the screw out of the door handle. You then need to take the window crank off (if you dont have electric windows). To do so, push against the door panel, so you can see which way the retainer clip on the window crank is facing, make sure that the clip is facing up. Wedge your shirt between the window crank and the door panel, and pull upward on your shirt. The clip should come out, and the window crank should come right off.
After doing this, adjust your door handle so you can pull the panel off, and then pop off all the snaps on the door, and lift the door over the lock by the window, and you should be set to go.
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Hope that helps.