If your domain is registered through smallGod do the following to change your nameservers.
Go to to My Domains at the following link.
Click the Manage Domain button for your domain.
Click the Nameservers tab.
Select the Use custom nameservers radio button.
Enter your nameservers in the fields provided.
Click the Change Nameservers button.
It can take 24-48 hours for the change to propagate through the domain name system.