>I missed the beginning of this thread so i don't know if i missed something relevant, but url rewriting in general is often done within >the front-end web server (eg. Apache). 
 
Logical, but this isn't done at the Web server. These sites go through Pound, which is a reverse proxy, then are actually served by Zope itself. Then again, perhaps they're rewritten in Zope's Web server! Where would that be, for 2.7.8?

TIA,

Tony