You can hide the columns and protect the worksheet with a password but
Excel's security is very weak and passwords easily broken.

My suggestion...............if you don't them to see it, don't include it in
the version you email.


Gord Dibben MS Excel MVP

On Wed, 25 Feb 2009 11:41:00 -0800, Rob
wrote:

I need to hide a group of columns so that when I e-mail the spreadsheet to
coworkers they cannot unhide the hidden data/columns. HELP

Thanks