I'm considering TurboGears for an upcoming project and am putting together
some test code.   For various reasons I need several domains to point to
different parts of a single website structure as well as to their own
"homepage"   EG

http://www.mydom1.com  ->  root
http://www.mydom2.com  ->  root/mydom2/
http://www.mydom3.com  ->  root/mydom3/
http://www.mydom4.com  ->  under construction page

but also to have  http://www.mydom1.com/mydom2/  etc to be vaild pages in
their own right

I gather I would use virtualhostfilter but are there any examples or
snippets out there that would quickstart my tests (I didn't find its use
obvious from the docs) ?     Or do you have any suggestions for its use?

I will be using CP as the front-end server and not placing it behind Apache
etc

TIA

Tim