[Zope] Developing customer customizable products

[Petter Holmström]

Greetings everybody,

I've tried to find some information on this subject by using Google,
with no success. Therefore I ask it here, and if I've selected the wrong
mailing list please let me know and accept my appologies.

I need to develop a Zope product whose logic-part is to be left
untouched but whose presentation parts (DTML methods, etc.) should be
customizable. I'll give a little example to clearify:

Let's say I write a guestbook product. This product has a default user
interface which means that I can, if I wish, just add a guestbook
product to the customer's folder and that's it. Unfortunately we're
seldom that lycky. Perhaps the customer wants the guestbook in another
language, or "embedded" into his/her original website. To do this I'll
have to override the default presentation pages somehow. 
The management screens can stay as they were.
What is the best approach?

Thanks in advance,

-Petter-

-- 
Petter Holmström
Civare, Åbo Akademi University
Axelia, Biskopsgatan 8, Room 339
Tel: +358 2 215 3508   GSM: +358 40 8395765 
Email: petter.holmstrom at abo.fi