to get to the lock, you just unscrew the plastic cover with three screws underneath. then youll see a yoke around the steering column with funny looking bolts. youll need to basically drill these off, its in the manual. (i guess they do this to see if the ignition has ever been tampered) then you can remove the whole ignition lock. youll see how it works, theres a dead bolt that locks into a notch in the steering column that is activated by the presence of the key.
now, theres several ways to disable the lock. one way ive heard to do is basically drill thru the back of the lock in the center of the black piece, and the innards will fall out, not sure if im describing it accurately since i didnt do it. the way i did it was i drilled and opened up the hole where the key sensor pokes into the lock, but i drilled it with the dead bolt pushed in, so basically the holes only match up when the dead bolt is pressed in. then i put a small dowel rod in the hole i drilled to jam the dead bolt in place. works for me and its not completely destructive, i can go back to stock if i want. (i have insane thoughts of *maybe* one day driving the car stock.)
also while youre in there, disable the key sensor as well, so it doesnt annoyingly beep with the key in with an open door. just open it up and place a pieces of tape between the contacts to permantly close the loop.