On Thu, 3 Jun 2010 20:49:01 -0700, FSt1
wrote:

good point but i prefere to limit the number of CF's as much as possible.
see my suggestion.
i would guess it would be user preference.

Ummm, but you can only ever set 3 parameters/choices (in Office/Excel 97)
... max .. ever. How much of a limit makes you uncomfortable (rhetorical) -)
Anyway, it fits the OP's requirements I'd guess.