Kathy
You can protect all the sheets and have an InputBox pop up when the
file is opened. The InputBox text would say something about the file is
read-only unless the user has a key word (password) and to enter that if he
has it. If he enters the right word, the sheets would be unprotected. If
not, not.
But be aware that Excel is not designed as a secure platform. Anything
like passwords or restrictive code can be broken/bypassed by anyone with
more than rudimentary Excel knowledge. HTH Otto