David wrote:

Grunff,
Thanks for a very comprehensive and helpful reply. You have restored my
faith in this newsgroup.

Glad I could help.

I've gotta say, this group has one of the best signal/noise
ratios I've seen in a newsgroup, in addition to some of the most
knowledgeable and intelligent people around. I really don't know
what I'd do without it.

--
Grunff