Using the tools on the Forms Toolbar you'll find that Option Buttons will
automatically exhibit that behavior. Check Boxes aren't designed to work
that way, nor do they have any property setting to change their behavior. If
you insist on using check boxes I assume there would have to be some
underlying VBA to make them mutually exclusive.
--
HTH |:)
Bob Jones
[MVP] Office:Mac

"
wrote in message ...
I'm looking to insert two check boxes into a spreadsheet so when I send
the
worksheet to someone else they can click the one that applys. I'd also
like
to have it set-up so that when one box is selected the other cannot be.

thanks.