One more thing...
two new versions of Bb have recently emerged that might be of interest to some:
Version 6
http://company.blackboard.com/press/viewrelease.cgi?tid=225
and Blackboard Learning System ML (Multi Language)
http://company.blackboard.com/press/viewrelease.cgi?tid=221
based on Bbs 5th generation software.
Here is a list of some Blackboard clients:
http://company.blackboard.com/clients/index.cgi.
I look forward to the input we get from the first converts.