Neil - I'd love to know the tuning and chord shapes for Canadee-i-o too. A good friend, Lee Collinson, used to do a lovely version of it but I haven't seen him for a while and can't remember the tuning he used. I worked out a passable version in EADEAE and normally work in DADGAD but I don't think Nic's was in either of those tunings.

All the best,

mcmoo