RE: password
Yes you can do that by going into the Tools menu> Protection>Protect Workbook, you can enter and password and it will ask you to repeat the password and its done. It will flag up a password protection message if you try to open it.
Tracy
RE: password
Hi Dana,
Agree with everything that Tracy has posted, another method; If you choose "Save As" when saving the workbook, in the Save As dialog box, choose the Tools menu, Choose 'General Options' and apply a password which will prevent the opening of the Spreadsheet to anyone without the password you append.