Click on your User name and it will take you to your User Profile Page. In the middle of the page. you'll see title labeled: Total Posts. Click below it where it says "Find all non-archived posts by tooth ferry and the posts you made will appear.
If you are asking about the one about AC, it's here:
http://www.montanaowners.com/forums/...ad.php?t=63696
under "Montana Problems, Problem Solving & Technical Help".