John, I hope you put a tracer on this thread! The comments here make very informative reading and I've found out loads I wasn't aware of thanks to your post. I've been 'on' mudcat for about 3 years now, I find it amazing, I have to remember to check the clock and log out, it's so easy to read post after post .............. .
I'll add my welcome - and close now.
Hazel.