On a car that has never had a window motor repair, it is unlikely that you can get to the window motor bolts anyway. In order to get to them, you have to drill into the door to see the bolts. That is why Leaburn said in most cases it is easier to remove the entire regulator assembly. If your car has the bolt heads exposed, then you can just remove those three bolts and the window motor will come right out (meaning it will fall, so hold it from the rear). Here is a pic of the window motor. The one phillips head screw shown is what you would need to remove to fix the gear inside. It is pretty straight forward once your inside of it, as seen in the next couple of pics. The motor in the pictures is the older style, but newer style motors have a different gear with small plastic cylinders within the gear for cushion as the window reaches full up or full down. I have made my own replacement cylinders with a wooden dowel and 1/4" vacuum line. Easy.

Remember, if you pull out some junkyard motors, use the ones on the same side of your car that you removed them from, or the polarity of the motor will be different and the switch will operate the window opposite of the switch position.