zone file, conf file, named file and mysite.com/site1

I run many sites off single core.

Here's what I've done to make multisite work pretty good:

• Create mysql database with permissions
• cd ../drupal/sites/
• cp -R default/ newsite.com
• chmod o+w /sites/newsite.com/
• Add a zone file.
• Add the new site to the conf file.
• Add a ServerAlias in the vhost file.
• Restart *named*
• Direct my browser to newsite.com and run the install script ...

I can also add a new site to a subdomain(s) (site1.mysite.com and site2.site1.mysite.com) by adding "A" records to the mysite.com zone file.

But now I have a new need: I need new installs at mysite.com/site1, mysite.com/site1/site2 (and not site1.mysite.com, site2.site1.mysite.com)

Specifically:

• What do I add to the drupal root directory or ../sites/ ?
• What do I add to the zone file?
• What - if anything - do I add to vhost file, etcetera?