[Zope-dev] Overriding a method in an instance.

Hi, I guess this should be a feature request for the collector but I thought I'd see what other people thought first... I'd really like to be able to override methods in an instance of an object. Examples I can think of are Squishdot and the Tracker. In Squishdot, or any ZCatalog for that matter, it'd be great to override searchResults to return what I want, formatted how I want. In Tracker, the same could be said for index_html. These may be bad examples, but hopefully you see what I mean... Anyway, if you do try to override, you get a 'This id is already in use' error. How do you get around it and how should this problem be solved? cheers, Chris