Hey Wind Dummy,
If you go into the Department of Fair Trading or ring them and ask them for info on starting a club, they will give you a pack that explains how to set it up, how to write a constitution or use the one provided, how to elect a comittee and take records and pretty much most everything you will need to know.

You can start a bank account after you have registered and if you go to a couple of different banks and ask around, you will find some, like Westpac, have a society/club account which has no charges so long as you do not operate as a profit making venture. This is important because your small amount of funds can easily be wittled away by bank fees.

We used the same kit to start AKSA years ago. Good luck with your club and with the locals.
Cheers and good winds,
Darren Marshall
(Ex founding Pres. AKSA)