If I recall correctly the procedure is as follows:
Disconnect battery and wait 10 mins
Remove column shroud (three screws from below I think)
Remove two screws from either side of the steering wheel (torx)
Remove steering wheel
Remove steering wheel centre nut (mark position)
Attempt to remove steering wheel. Swear a lot, have a cup of tea, break out puller and remove steering wheel
This should then reveal the flaps which are secured to the switch assembly with allen screws. As I was fitting cruise control when I did this I removed the whole assembly but I imagine it is pretty simple from here.
Enjoy (esp the steering wheel bit)....