You should look into SocialText, a great introductory wiki tool (hosted), with other collaborative features as well. I've used it with several projects and organizations and it works great across varying levels of technical expertise.
http://www.so…
Be2course - how to learn/teach Web 2.0 skills to built environment professionals (eg: architects, engineers, QSs, construction managers, facility managers etc)
We're looking at arranging a be2camp Canada version later this year. Anyone interested is welcome to join whether attending, curious or equipped with tips and tricks for running an event!