I thought I'd share this. Faceted classification + ZUI = an interface that works for kids and adults. http://www.icdlbooks.org/library/help/search_area.htm explains it. At http://www.icdlbooks.org/library/ you can download the tool (Java) and play with it. I am in awe. PeterV http://poorbuthappy.com/ease http://xfml.org