[Zope] howto i18n?

Hi, for now I use the Zope 2.7.5 tarball. I write freelance (not bound in a product) page template and wish it to be i18n'ed. I have appropriate tags inside and the domain set at the top. There is also Plone with its products in that instance. Where should I put the PO files, so the messages can be substituted? Thanks. -- \//\/\ (Sometimes credited as 1494 F8DD 6379 4CD7 E7E3 1FC9 D750 4243 1F05 9424.)