If you set the "management_page_charset" property to "utf-8" in a folder (even the root folder) then Zope will inform the browser that the charset of the management pages of this folder and all subobjects is utf-8 and the IDs in the folder listing page will look right.
This does seem to solve the problem (at least with OpenOffice. Cadaver does not like it, but that is probably a Cadaver bug).
Zope-Dev maillist - [EMAIL PROTECTED]
** No cross posts or HTML encoding! **
(Related lists - http://mail.zope.org/mailman/listinfo/zope-announce