I'm trying to help you out, that's all You seem unsure about how it works, going so far as to ask for peoples login details for Club Nintendo. Thankfully, the offer is a lot easier than that and doesn't require you to log in as someone else at any stage.
@DFawkes What do you want then? if you dont have referral code :/
Of course maybe I've misread what you've said. As far as I can see, the only thing you're missing is a registration code for a 3DS XL. Given this needs someone to buy a new relatively pricey bit of hardware, I just think it's unlikely anyone will give that up.
As I've said before, best of luck finding one, I just feel it's not that likely. You never know though, so fingers crossed
I'd kick the living daylights out of the producers of Tipping Point - Ghandi