This is from an archive post by Shaggy...

Make sure that your wheels are straight ahead and remove the ignition key and disconnect your battery.

Now you need to disconnect your air bag you need the long thirty torx and if you feel around the back of the steering wheel you will feel 2 holes insert your torx into one of these and locate it in the screw and undo then repeat the operation on the other hloe and the air bag should come away disconnect the connecter this should just pull out and remove the airbag unit this should be placed metal side down and out of the way

Disconnect the 2 horn wires and undo the 10mm alen key that holds your steering wheel on then remove the wheel unit
next remove the 2 screws that hold the contact ring in and remove the ring (this should come away as one unit do not try to turn this unit once removed and ensure the wheels are straight ahead when refitting) then undo the three screws that hold the cruise control (if fitted) and the indicator stalk in and remove both of these you will see the connectors for these which you will need to remove from there holders on each side of these connectors there is a plastic flap that you push towards the connector with a small screwdriver whilst pulling the connector towards you (do not try to push them away from you as they will break off and you will not be able to refit them)

Now you need to remove the transponder coil around your ignition switch if you look inside your steering column surround where your ignition switch is located you will see the clips that you need to lift whilst pulling the transponder away from the switch this does come away with a little bit of force be carefull as this has a wire connected to it do not attempt to remove or cut this wire as you will no longer be able to start the car if this wire is broken
now remove your steering column surround this will pull towards you(note if you have an adjustable column you will first need to remove the handle on the adjuster lever this is done by removing the screw located through the handle and then pull the handle off ) the surround will pull away over the steering ignition barrel it is just a bit tight and when refitting make sure that the lower surround locates on its peg
next remove wiring multiplug from the ignition lock and ensure that the wiring loom is free to move away from the columnand all multiplugs are disconnected from the column