Log in to the 1&1 Control Panel using your 1&1 Customer ID OR domain name and your 1&1 password.
If you have only one package, you will land on the Administration page. If you have more than one package, select the package in question to reach its Administration page.
Click Manage Domains from the Domains panel.
Click the arrow icon next to the domain name in question to display an options menu.
Edit DNS Settings from the Domain Settings section of the options menu.
If the domain is not currently set to use the 1&1 name servers, you will not be able to change the IP address within the 1&1 Control Panel. You will need to update the IP address with your current DNS host.
Select Other IP address and enter the four parts of the IP address within the text boxes. Each number separated by a dot(.) should be typed into a separate text box.
Click the Save button when finished.
Once you have finished these settings, it may take up to 48 hours for the changes to be seen across the internet, so please be patient.
Links to Related Articles.
If you didn't get your question answered, please contact the Pinnacle Cart Support Team. To submit a ticket, go to the My Account drop-down menu at the top right of the admin area and select Support