Name server information changes

Where do I need to go to change the name server information? I got an e-mail stating I needed to change this information, but it didn’t tell me where to change this information. Thanks.

This is the information listed for our account:
Record ( zone) Type Value
calendar CNAME
docs CNAME
ftp A
mysql A
sites CNAME
ssh A
start CNAME
www A

The above listed information is listed as ‘un-editable’. Yet I got an e-mail stating I need to change info to:
Name Server:NS51.1AND1.COM
Name Server:NS52.1AND1.COM


I just posted the answer in the other forum post here: