I am trying to setup GMS for Linux on a test machine that is already
running Apache. Is the document root for GMS at /opt/ims/www by default?
I am trying to setup corresponding Directory and Virtual Host statements
for GMS and am having no luck so far.

I have a directory statement with root set to "/opt/ims/www" and a vhost
statement that has my domain pointing to the same directory. Then I am
trying to go to http://<mydomain=/opt/ims/www>/admin and I have no luck.