Domain Mapping with GoDaddy
Log in to your account at GoDaddy. Click on "Domain Manager" on the Welcome page to see a list of the domains you own.
A list of your domains appears.
Select the domain you want to map to your Portal.
A detail page appears.
To make sure that people who visit http://yourdomain.com (without typing the www) get to your Website, you can click the link under "Forwarding" to set up forwarding to http://www.yourdomain.com (with the www).
Back on the detail page, click the link that says "Total DNS Control and MX Records."
Under CNAMES (Aliases), modify the WWW entry. You can do that by clicking on the pencil icon.
On the form that appears, enter sites.trunity.net as the value for "Points To Host Name."
Click OK and you are set up!