Ok, looks like they are no good then, never mind, thanks for your replies.
I did try to register two, but got error messages, and wasn't sure if I was just getting the message as they had already been registered, being that I brought the games second hand.
looks like I will have to find another way to get that game and watch collection! am i right in thinking that this will be a club nintendo product only, and not released in shops as a general release? or will we see it in the shops in 6 months time?