1)  Go to GoDaddy and log in with your username and Password.







2)  Click the My Account button.







3)  Click Manage Domains.







4)  Select your domain name.







5)  Click On The Nameservers that it lists.







6)  Select "Custom Nameservers" and change them to be NSA.PowerDNN.com and NSB.PowerDNN.com







7)  Click the OK button to apply your changes.  Officially it takes 24-48 hours for GoDaddy to update everything, but usually it only takes a couple hours.