How to transfer ownership of iPod correctly?

[scabmettler]

I'm selling my iPod and am not sure of how to transfer ownership. I've registered the pod under my own name, but how do I go about changing this over to the new owner's name? I want the new owner to have all the warranty info, and at the same time, don't want him running around with a pod registered to me.

Any suggestions? I've looked on the Apple site but they don't really cover this contingency, at least as far as I can see.