[Zope] Rewrite trickery with virtual hosts and RewriteRule

Hi I've seen that with Virtual Host Monster you can prefix any path element with _vh_ to stuff it into the url. I'd like to insert this prefix to a set of path elements in Apache RewriteRules, e.g. /Clients/SomeCo/zope_/sites/some_co/manage should be rewritten to blah/VirtualHostRoot/_vh_Clients/_vh_SomeCo/_vh_zope_/some_co/manage I'm a bit stuck with the RE syntax though - any help appreciated. TIA, Felix.