You need to remove the trim from around the door release handle by pushing it towards the front and popping it off. Came off fairly easily for me.
Also, using a thin flatheaded screw driver, pry off the cap over the window winder, you'll see what I mean if you look. Be careful that you don't scratch it, it's fairly easy to do according to my PO. I have the evidence to prove it. :|
After that's removed you'll be able to see a screw that needs to come out. You'll need a 1/8 hex key.
The door lock screws off.

When you're removing the door panel, be careful of the wiring behind the door.