To change your DNS servers, log into your Domain registrar and follow the directions listed with your domain registrar.
In order to make a DNS change with BummerDomains.com, follow the directions below...
1) Login to your account at BummerDomains.com
2) Look to the Menu on the left side, then click on "DOMAINS"
3) Now, look in the middle of the page and find your domain. Click on the M located directly underneath the domain name.
4) Look to the left side Menu and Click on "Change Nameservers"
5) Enter your new dns details here.
6) Click "Submit"