To link your domain name to your provider, you should list its name servers under your domain name. You can do this by logging into your account and clicking on the name for which you wish to change the name server information. You can list up to 9 name servers, but usually the minimum number is enough: two. Name servers usually have names like ns1.Host.com and ns2.Host.com.
You can also use our nameservers for linking your name. To link your website to an IP address, choose 'IP address (A record)' under the settings for 'Web'. You can link to your own mail server by choosing 'IP address' under the settings for 'Email' and entering the IP address of your mailserver.