Good morning! I need to write two zclasses: one representing a photo (with several Images of the same photo at different resolutions) and one representing a catalogaware, objectmanager, article (with several photos of the same object, descriptions etc.) The photo instance should be created from an Image by a python function and the python imaging library, much like the Photo product does. I'd like to understand the following: - why is it dangerous to use External Methods inside a ZC? - what's the difference between Python Methods and External Methods? - may I create and call zclasses from and external method? (me likes syntaks hilite! me small screen! me want vi!) Sorry if I bother you with questions that may have been deeply answered, I didnt' find them in the recent archives. May I gain zen enlightment and give back to the mail list soon. Thanks