Note that this requires you to have a accessible server running Windows
Server 2003, and your clients to use XL03, as well, or they won't be
able to read the file in XL.

IIRC, if you give permission to edit the file, the user will be able to
copy the content (and paste it into another, unprotected, workbook).
Since the file in question is an order form, I don't know if that would
work for the OP.

In article ,
"Rob van Gelder" wrote:

In Excel 2003, there is a feature called Information Rights Management.

It allows only certain people to have access to the document.
It has other features too - including self expiring documents.