One way might be to remove the row and column headers. Tools - Options -
View - uncheck Row & Column Headers.

This will make it distinctly more difficult to unhide the columns without
having to resort to some form of protection.
--
HTH...

Jim Thomlinson


"geebee" wrote:

hi,

i want to be able to hide and unhide columns in excel depending upon a value
selected and then veryfying whether or not a value entered is correct. but
the only disadvantage of this is that any user who does not enter the value
correctly can just go to the sheet and select column -- unhide. i want to
prevent this from happening.

what is the best way to handle this?

thanks in advance,
geebee