Recently I've had a hands free mobile phone kit installed in my car (MY98). Over the past couple of days there is a very loud rattle coming from the back seat area (can be heard over any bump). My guess is that the cold frosty nights have caused the tape securing the airial lead to loose stickyness and come loose causing the rattle. The lead is behind the plastic trim that runs along the edge of the roof lining. How easy is it to get behind this to have a look? How is it held in Place? Thanks for any tips...

I had to do this when I replaced rear speakers.
Pull off the n-shaped strip of plastic that goes down the edge of the rear door. It's held by metal clips; you have to pull quite hard, but there are no screws. This then exposes a screw for the upper edge of the door/roof. Unscrew this and yank. Hard. Again, plastic/metal clips hold the rest in place. It's fairly easy, but don't blame me if you break something :-) This is from memory; there may be other screws, but I don't think so.