Where is the theromstat located on the 99 Audi A4

Here's a picture of my A4 2.8L when I changed my thermostat a few weeks ago (you have to remove the front of the car - pretty time-consuming job):

http://farm3.static.flickr.com/2456/4026320040_32ef32e2d2_m.jpg

It goes in the hole behind the toothed timing belt in the center of the picture. Expect a shop to get 5-6 hours labor. If you're in range of upstate NY, let me know - I can do that job for you (and the timing service as well, since there's a lot of labor and you're already in there). Post here as a followup reply if you need more information on doing the job yourself or if you want to talk about having it done.