installiing joomla

[Roger]

Ok I've been doing some experimenting with set up Drupalwise,

If I download the file to /Downloads, cd /user  then mkdir drupal, 
extract from /Downloads to /user/drupal/ all as user, I get correct 
ownerships and permissions.
Then sudo cp -R drupal-7.23 to /var/www/html/ it retains user defaults 
and is accessible from user.
Next I'll try Joolma.

Question about apache DocumentRoot.

I have a Drupal development copy of a live site in 
/var/www/html/some_site.  /var/www/html is default DocumentRoot
What should I do in http.conf to point also to /user/drupal/that_install 
so that I can work both?
Could it be done as VirtualHost? If so what changes to /httpd.conf are 
needed?

An answer to this may also solve the original poster's Joolma 
installation situation.

TIA
Roger