Ash tray - Slide the lid back, pull the liner out, you'll see a small screw in the bottom. Take the screw out, and rock the tray off the carrier and pull the whole thing out (this is where you have to unplug the cigar lighter) Seperating the lid is a bit of a c*nt but its on sliding clips, you'll get it eventually.
Passenger door pull - _Carefully_ prise the trim insert out of the middle to reveal the holding screws.
Cup holder - This one can be tricky, first off.. make sure you have the revision B cupholder, or your new trim wont fit at all. Difficult to describe the difference between the two, but basically a rev. B holder will eject all the way out when you push the top in, a rev. A holder needs to be pulled out. You can get the rev. B cassette from the dealership for about 30 bar.
If you already have the rev. B cassette, then you will see two silver clips, one at each end, the trim snaps out and slides off these clips, fitting is the reverse.. slide on and snap in.
Hope that helps, and you just reminded me I still haven't fitted my door triggers yet
