Automatic date up-date

[Stephen Graham]

At the bottom of all our web pages we have a date of when that page 
was last up-dated.  This is OK, but some of them do not need up-dating 
regularly.  It looks bad if a date on a page is a few months old.  
Does any one know of a way of  periodically automatically up-dating 
the date on web pages with out actually going to each one 
individually?

Thanks

Stephen Graham
London Business School