Fon-
I'm not sure what kind of collaboration you are looking for, but there are two new web sites up which were made through collaboration between The Minneapolis Institute of Arts and the Walker Art Center (that is www.ArtsConnectEd.org) and The Minneapolis Institute of Arts, the Walker, the Weisman Museum and the Minnesota Museum of American Art (that is www.ArtsConnectEd.org:8080/~ArtsNetMN). Hope that info helps!