"Paul W Smith" wrote in message
...
With respect you are offering an alternative that is not suitable for my
purposes rather than a solution to what I asked.

Protecting a WB or WKS has to be carefully considered to ensure all
functionality still works, I do not wish to go down this route, all I want
to be able to do is send a Read Only file and have it still be Read Only
when it arrives.


Then you're out of luck. There is NO way of doing this AFAIK. Once that file
leaves your machine, there is no way that you can stop the recipient doing
what they like with it...