For anyone still not understanding the drive key thing, here is an analogy:
Imagine a box which has a padlock on it. This padlock has two keys, I have one key, my friend has the other key. I put an object in the box, lock it with my key then send the box to my buddy.
My buddy can open the box with his key and get to the object inside, because he already has the correct key for the lock. He doesn't need to use my key to open the box because he already has one himself.
This post has been edited by DrexeL_UK: Nov 11 2009, 04:33 PM