Changing the primary domain name on a hosting account lets you change the domain name associated with account's Web root directory.To Change Your Primary Hosted Domain you have to follow these steps
- Log in to your Account Manager.
- Click Web Hosting or Managed WordPress.
Click one of the following, based on the type of hosting you have. You can tell this by the second word in your hosting's description beneath your hosting account's domain name.For any technical assistance you can take help with some reliable registrar. I got very good review for Bigrock.in.