does your hosting package have addon domain feature ?
Addon domains allow you to host multiple domain names from one hosting account, utilising the extra space and bandwidth available on your main hosting account. Addon domains point to a subdirectory within your main hosting account. From a web user's perspective, an add-on domain functions just like any other domain name, and the user will not know the site is hosted from your main account. The browser's address bar will show 'http://www.add-on-domain.com' (no reference to your main domain name). Addon domains are created through your control panel (check to see if your hosting package includes them).
Steps
1 To access the Addon Domain Maintenance menu, click on the icon above the words Addon Domains on the main screen of your cPanel interface.
2 Enter the name of the addon domain in the blank field next to New Domain Name:
3 Enter the name of the directory which conatins the subdomain that the addon domain will point to in the blank field next to Username/directory/subdomain Name: (This directory will be the location for the addon domain's files, just as public_html is the location for your domain's files.)
4 Type in the password for the new addon domain, and click on Add Domain!
NOTE: You can upload files directly to this addon domain using the username and password for the addon domain to log in through ftp.
