I assume from the deathly silence which followed my request for info on interfaces between Informix and Zope that there is no such thing. However I believe that Python has such an interface.

Yes, I believe there is a Python interface for Informix.

Can anyone give me somewhere to start looking to see what might be involved in developing a Zope interface for Informix myself.

Chris Petrilli wrote the following How-To: http://www.zope.org/Members/petrilli/WritingADA which didn't get as much critical review as he/we would have liked. If you decide to pursue this, PLEASE let us know if the How-To was useful, correct, etc.. Hope this helps, --Rob