If your talkn about the trim on the underside of the deck lid; I used a clip tool to pop out all the plastic clips then pulled it off. A clip tool is like a screwdriver with a "U" shaped end. You just put it under the clips head and prey them straight out. Let me know if this helps or if you need me to elaborate.
this is cake its pretty much the same in any sedan..
ohh you want to know how to do it? heh
Ok pry the seat bottom out by pulling up on both sodes and the middle. Then you need to remove the seat back by removing the 3 bolts at the bottom of the seat back. Once removed lift up on the seat back and it should come loose. After that you should have access to remove the rear deck. This is how i did it in my SRT-4, should be pretty much the same concept.