I have registered a new domain name and want to use it. What are my options for adding this name to my account?
1) If your registrar offers 'stealth forwarding', 'frame forwarding'. or any other type of forwarding, you can link it to your current domain in that fashion.
2) You can purchase an independent hosting account for the new domain name. This is better than option 1 since it will provide the new domain it's own email and independent identity.
3) Your hosting account may support "add-on domains (http://my.hostned.com/forum/index.php/topic,771.0.html)" or "domain aliasing".
4) Upgrade to an account that handles multiple independent domains such as SDL-R or dedicated server.