In the macro that uses this cell for part of the filename you could strip the
special characters before using the information (or substitute acceptable
characters).
Will

"TinaF" wrote:

I want to do either "conditional formatting" or "data validation", I
think, so that users will not be able to enter special characters in a
particular cell (/ * \ @, etc).

There is a macro that saves the spreadsheet using the data in this
cell as part of the file name. If they use certain special characters
(such as slashes) it causes an error when they try and run the "file
save" macro.

However, I don't see how to bar the entering of specific characters
using conditional formatting or data validation. How would I do this?