Just read your post, this thread gives a how to fix it assuming you have the same problem, you will know if you read this thread;
http://www.automotiveforums.com/vbul...=rear+defogger
the fellow with the last post has pictures , you have to copy them to your browser.
I had the same issue, it's really another bad design flaw , but a relatively easy fix.
copy the picks from http thru to jpg and put them in your browser address bar and hit enter.
as bnaylor said it's located passenger side, rear seat pillar under the molding , pops out. have to give a good pull on antenna connection to remove it.
Good luck.