First time caller!

I need to replace the two electric window switches on the drivers door on a 53 plate A4. While I'm at it I'm replacing the black piece of trim that surrounds the switches, wing mirror switch, and the handle as it's pretty scratched.

Anyone found a 'howto' for doing this? Will the piece of trim pop out, and allow me to replace the switch and the trim in one easy step, or does the door panel have to come off, and attack the job from the back?

Thanks