You can set up a domain name that you own to point to another domain name. This is known as "parking" a domain.
Example: You own the mytshirts.com and cooltshirts.com domain names. You already have a web site for mytshirts.com, but you do not want to create a new web site for cooltshirts.com at the moment. By parking cooltshirts.com on top of mytshirts.com, all URLs for cooltshirts.com will automatically go to mytshirts.com instead.
To park a domain:
Click on the Parked Domains button on the home page.
Enter the name of the domain that you want to park in the New Domain Name field.