In order for your site the work you need to have your domain name point to our server.

The other names that can be used to descibe a DNS is Name Server and Domain Name Server.

Our DNS info is:
dns98.yournewdnsinfo.com
dns99.yournewdnsinfo.com

Both of these are needed.  Just remove the ones that are currently there and replace.  If you have more than two already there remove the remaining ones.