Well, after nearly two years in the new house, I finally pulled the Wii out of it's box and gave it a good dusting off.
Thanks to Nintendo's reliability, it came right on and only took 45 minutes to update... after which it told me that it had been more than 1 week since my last Wii Fit test (it hadn't seen me in 849 days).
I think it's the Wii's way of nicely telling me that I am a lazy American.
If anyone wishes to add me to their Wii friends my code is 4103 3737 8451 8430. If Cadder or A1 could add this to my Consortium Details I'd appreciate that too.