Can you do it with CSS? If your namespace number is (say 8), you'd put in Mediawiki:Common.css:
body.ns-8 #firstHeading { // your styles here }
Or how about with JavaScript in Mediawiki:Common.js? Check the namespace, grab the element with ID "firstHeading", and transform the text?
DanB
-----Original Message----- I am trying to change the way the title of pages in a specific namespace are displayed....