Pike,

Age old question.....
The simple answer.....
Functionally, you can accomplish this but Excel is not secure
enough to trust that it will protect your work.

Take a look here for a good dialog on the subject with examples
and pitfalls.

http://makeashorterlink.com/?B29A12675

John

Pike wrote:

Hi,

I'm trying to license out the use of one of my spreadsheets and would
like to be able to disable them after a certain date. Is there any
mechanism to do this?

Thanks.