From the looks of it in the service manual (page 8G-24 and 8N-72), you can replace the whole assembly just by removing those two torx head bolts in your picture. You may have to remove the interior door panel if you can't get at the wiring connector / release.

If I were you Golfergal, I would order the part online. When you get it, take a look at what's in the box. I bet you can install it with the right size torx driver. So for $130 + shipping + the price of a torx driver, you're in business.

Worst case scenario, you can't install it yourself, you go to your dealer and find the guy that couldn't even read enough to tell you how much the part was, and show him the part and have someone else install it!