Hi Ciaran,
May I ask you how your project is progressing? We are currently setting up a KM group at La Salle university in Barcelona, and a mulilingual search engine would also be one of our first goals.
However, the second goal would be a "personalized" search engine, using Bayesian networks for selection purposes and a lot of other modules.
Bests,
Frank
mailto:fraber@project-open.com, http://www.project-open.com/