I never did this procedure on a nissan but what I had my 2001 audi s4 it got broken in to 3 times. I've gone to the dealer every time and ordered a replacement lock. It had to be special ordered to match my key directly from Germany ($27/lock, not bad). After third break-in i just replaced the door handle with the one that does not have the key hole.
hope that this helps in any way
Nick
hope that this helps in any way
Nick