You're welcome, Carl !
Glad it worked for you ..

> .. Are there any decent books or publications or
> is it a matter of learning by observing experts and asking questions?

One good way is to hang around these excel newgroups (they're open 24 x 7,
btw <g>). Read and try out the posts / responses given. You're bound to
pick up a lot of useful stuff from the responses provided by the many
experienced and extremely helpful folks around here. Also, try answering
some posts as well, don't be shy ! (Practise never hurts)

If you're interested in books, Debra Dalgleish
maintains a comprehensive listing of Excel books at her:
http://www.contextures.com/xlbooks.html

And you might want to visit some of these Excel sites as well
(taken from a past post):
http://tinyurl.com/8ho6c

--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--
"Carl" <cscarlson@cox.net> wrote in message
news:1136443509.809821.176600@g47g2000cwa.googlegroups.com...
> Max,
>
> This worked perfectly! I am impressed and grateful for your help.
>
> I would like to become more expert in the applications of advanced
> excel formulas like you used. Any advice on how to increase my
> knowledge would be appreciated. Are there any decent books or
> publications or is it a matter of learning by observing experts and
> asking questions?
>
> Thanks again.
>
> Carl
>