A wiki would almost certainly be useful. Feel free to install one. I've recentlyuseddocuwiki which is quite nice, but whicheverwiki takes yourfancy is fine by me.I have been using TWiki for our projects. This is what i will install if there are no objections.Do you have a demo URL of TWiki? The recent 1.3.1 version of MoinMoin is great, very usability oriented, and really nice designs.
http://twiki.org