Often, the most timely process in getting set up will be if you are transferring your domain name from another provider to another. The domain transfer process differs depending on through whom your domain was registered.
If your domain name is already registered, but not residing on our Name Servers, then you will need to modify your domain name to point to us for Nameserver services. This should be a simple process as most registrars have automated forms to accomplish the task. If you are not sure what method your registrar uses it would be best to contact them directly and find out.