[Zope] ZClass extensions

[James Gilbert]

Hi all,

Here's what I want to do:
By selecting a certain class as a base class for a new ZClass 
(eg MyBaseZClass), I want to have a management tab/page available to the
Class definition in the Product where attributes can be added/
edited/deleted (basically access to an object list in MyBaseZClass). 
These are then created with instances of the ZClasses. Similar to 
propertysheets, but management of more complex objects than 
propertysheets provide. 

What I need is any information on how to define MyBaseZClass so 
that management tab appears in ZMI and so that properties set 
there will be created when an instance of the ZClass is created. 
Indeed, if people think ZClasses are even the way to go. They do 
provide the desired behaviour - user definition of class attributes 
via the ZMI which are then available to all instances of that class.
Even better would be if there is already a simple solution that 
I've overlooked :)

Any ideas/info/links would be greatly appreciated

James Gilbert