Been a long time since I posted, but just wanted to add my 2p worth to this thread. Aikon's instrctions are good but there are a couple of additions I would like to make as I have just completed the same ashtray removal.
1. The removal of the black plasric beneath the climate panel means you will have to break it. Put your fingers underneath the lower lip and wrench it off. Warning .. do NOT wrench off the trim on the trinket tray!!!! Not delicate but it works. You won't miss it but you could add a blanking panel later. This plastic reveals the two screws.
2. When latching the roller spring I found it much easier to remove the roller off the two lugs that keep it in place, then wrap a piece of copper wire around the shaped tongue that would clip into the ashtray. Feed the wire through to the front of the ashtray, and clip the roller back into place. Pull on the wire until the spring is at the front. Hold the spring with your finger or pliers and remove the wire. Clip the spring into place.
Voila! Thanks for previous contributors for you help