[Zope] - Personalization and ZOPE

How would one go about making Zope store personal data about a site visitor (Session to Session data linked by a user logon)?   SCENARIO:   1. The user logs on and registers. 2. The user fills out forms to customize the site as part of the registration process. 3. The site uses the user variables to make the navigation, content and graphic changes. 4. If the user edits the variables the site changes. 5. The developer gets some sleep by using zope.   ANY RECOMMENDATIONS?   IT WOULD MAKE FOR AN EXCELLENT EXAMPLE OF ZOPE!     Theodore E. Patrick Indigo Networks   email: tpatrick@indigonetworks.com <mailto:tpatrick@indigonetworks.com> phone: 615-777-0070 ext.125