[V6-12v] Ignition switch replacement - 95 A6Q

[beattyr2003 at cox.net]

I have gotten conflicting opinions on replacing the ignition switch for a 1995 A6Q.
 
The problem is that it sticks partially in and on and you have to press the switch in with your thumb for it to unstick and that the key positions arent working correctly, ie it will start but no headlights, climate control ect ect.
 
Does replacing this switch require drilling out the lock mechanism from the steering collum or is it as simple as pulling the dash parts that are over it and around the steering colum and then just unplugging the switch and putting in the new one?  Thats where I am hearing two different stories.
 
Thanks for any insight,
 
Rob