yes
Yes, that is what I was trying. I have tried it in the httpd.conf and in the apahce2.conf, I think that I currently have that code in proxiedhosts file, modifying the suggestions made here http://ubuntuguide.org/wiki/Apache2_reverse_proxies, given that it looks like the same sort of thing that I was trying to do.
The /mysite/mcma floder doesn't exist and doesn't symlink. The only symlinks are the ones suggested in the link above.