93 Lumina Ignition Rack replacement.

I need to replace my ignition rack see pic below.. Is there a guide anywhere that will tell me the procedure? I have a 93 lumina base with tilt wheel steering column. Thank You!

http://z.about.com/d/autorepair/1/0/U/_/tw-29.jpg

Some useful info may be found at autozone.com, repair guides.