Thanks a lot for all the guidance on ZPatterns so far. Our company is building a Customer Relationship Management system using ZOPE and ZPatterns. We have a object model and basic Dataskins and Specialists in place. At this point we thought it a good idea to share the object model with the Zope community and invite comments since we will be giving it back to the Zope community. Go to http://www.zope.org/Members/sparroy/CRM to download a pdf of the model and make some comments. Roché