So that everyone can finally have the laugh I've been promising, I finally got my web page up and running, with pix.
So:
http://www.oneandoneis2.demon.co.uk/...cannister1.jpg http://www.oneandoneis2.demon.co.uk/...cannister2.jpg
will show you my home-made cannister light.
And
http://www.oneandoneis2.demon.co.uk/DiveWeb/ will show you everything else...