Addendum: I tried to do this (on the basis of an old message) by adding a Redirect to the site (editing the only site shown in Server Admin, empty domain name, to add a URL Redirect (type: Redirect, Pattern: / Path: http://new.server/site/) and restarting the web server. But now I can't connect to the site at all (connections return an error message "can't connect to the server old.server")! And going back in, deleting the redirect and restarting it again doesn't help: I still can't connect at all.
I really need some help with these settings....
If your going to use .htaccess files then you need to edit you /etc/httpd/sites/<vhost>.conf file.
You'll need to be root to access the file and look for the statement:
and change it to:
Then add somewhere near the top:
Save the file restart the Web service. Now your .htaccess files should work.