When Humboldt State University moved from Blackboard to Moodle, I was responsible for the coordination of the conversion of hundreds of courses & the retraining of dozens of faculty. One of the key projects I worked on after the dust settled was the development of their Moodle FAQ database.

Some of the topics are specific to their installation & circumstances, but there's over a 100 questions in there, so check it out - you may just find an answer.  For those wondering, I built the site with Drupal (also the platform of my blog) which I think is an excellent choice for building an FAQ.