First the window motor wires are unplugged from the motor. Eight nuts/bolts need to be removed to get the regulator out of the door. These fasteners are marked with the red arrows in the photo above. Note that 3 of the nuts hold the black reinforcement plate in the door. This plate must be removed before the regulator is removed from the door. 

With all of the nuts, bolts and wires removed, the regulator and motor assembly is twisted and wiggled out of the opening in the door one track at a time.