I just found a great on-line resource of medieval links (to journals, libraries, other websites, etc.). You’ll find it at:

http://www.ulb.ac.be/philo/urhm

which is run by the people at the Free University of Brussels (l’Université Libre de Bruxelles). It’s wonderful. The site also points to a consortium of other medievalist sites, and a portal for medievalists that is as thorough as I have yet seen.