How to I create Sub-Domains?
To create Sub-Domains for your site, follow these instructions:
Create a directory within /var/www/html/ (your default html directory) exactly as you would like the sub-domain to resolve.
Example: Create a directory called sub.yourdomain.com in your html directory and it will resolve to http://sub.yourdomain.com (It will search the folder you created in the above example for the index file of the sub-domain.) NOTE!! it is not designed to be accessible as http://www.sub.domain.com (the www. will not work).