Greetings Zopistas! I'm currently working on a site which requires that I store City, State and Country entries in a hierarchy such that multiple cities can roll up under a state and multiple states can roll up under a country. To accomplish this, I have a created a small python product called LocationManager which stores data as follows: USA Massachusetts Boston Lexington Concord Illinois Chicago Evanston California Los Angeles San Diego Canada Quebec Montreal etc What i would like to do is use a Catalog to flatten that data out and enable me to retrieve all of the cities in one fell swoop. I've read over the ZCatalog tutorial and have searched zope.org, and I think I see how to catalog properties of products. However, I haven't really found anything that describes: a) How to build a python product that is catalog aware? b) How do i retrieve the data from the catalog without a search interface? URLs to any resources, or any answers to my questions would be MOST appreciated. Thanks so much, Keith R. Alperin