Take the door panel off and locate the window motor inside the door cavity. You will notice that the motor is attached via 3- 10 mm bolts. If you look at the sheet metal that covers the motor you can see all of the rivets that attach the motor and regulator assembly to the sheet metal.
In this same area you can see 3 small dimples in the exact location of the motor attaching bolts. Using a large drill bit , place on top of dimples and drill a hole. You will now have access to the attaching bolts. remove the bolts with a 1/4 drive deep 10mm socket. Unplug the motor and replace.
No need to drill any rivets. The above process will take anywhere from 30mins(me) to 1hr.