| I don't think you have to "register" it. The only advice I would offer would be to get a receipt from your family member notarized with the date of sale.
This way if it was used in a murder on August Second, you can show you took posetion on August 12th. Which might come in handy.
__________________ "...to those Americans whose support I have yet to earn, I may not have won your vote tonight, but I hear your voices. I need your help. And I will be your president, too." -President Barack Obama |