If you registered a new domain name and would like to host it on the x10hosting.com servers, just point your domain to x10's DNS servers
| NameServer1: ns1.x10hosting.com
| NameServer2: ns2.x10hosting.com
As for the address that you point the domain to, you can use the subdomain that you recieved when you signed up for hosting.
ex. mysite.x10hosting.com