Hi, I have 3 questions that are (hopefully) easy for someone with Zope experience. 1) What's the best way to access a python package from Zope? My current state of knowledge would suggest that an external method or set of external methods would be the best way. However, does that mean that for each external method that accesses one of the methods in my class, I have to create a new instance of the class? Is there some way to keep a reference to a class as a Zope object so that I can use it in different DTML documents in the same folder? 2) What are the issues with using ZODB filestore persistence in a package that is accessed through Zope? My package uses the filestore persistence and works fine when used by itself. When I try to access it through a web page using an external method I get an IO error saying that permission is denied on "Entity.fs.lock" ("Entity.fs" is the filename I specified to store the persistent objects). Do I have to use a different type of persistence? Or is there something else that I've done incorrectly? 3) There is an example of an application that seems to be very similar to what I want to do in the document "A Technical Introduction to Object Publishing with Zope". I realise that this document is dated but is the information in this example still valid? If not, could someone tell me, in general terms, what the new approach should be to this kind of problem? How does the Zope management interface fit into this? I realise that these are potentially big questions (especially the third), but I would be very grateful if someone could even just point me in the right direction or give a couple of hints :-) Thanks, ------------------------------------------------------------- Gregor McEwan Research Scientist DSTC Pty Ltd Level 7, GP South University of Queensland 4072, Australia Phone: +61 7 3365 4310 Fax: +61 7 3365 4311 Email: mcewan@dstc.edu.au "To know the road ahead Ask those coming back." Chinese Proverb