Hugh,
Have you considered the "Save as Web Page" option - this will allow you to
provide people with an interest with a "Static" image of your project plan
as of a specific date and also has the benefit of being tamper proof and you
only disclosing the information you want people to have whereas access to an
mpp file allows both access all areas and can be changed "inadvertently".
There is an article on save as HTML in the downloads section of my website.
Happy planning.
--
Dominic Moss
www.projectability.co.uk
Helping people achieve more with Microsoft Project
Tel +44 8707 303 400
Fax +44 8707 303 500