Eh? Is this your primary domain or an add-on domain? If it's an add-on, you point it to the same nameserver that your primary domain uses (it's listed in your CRITICAL ACCOUNT INFO email or you can use whois or just ask support if you have no idea). If this is your primary (first) domain, you would use the nameserver(s) that LP told you to use in the CRITICAL ACCOUNT INFO email. In either case, you wouldn't be pointing your domain name to some example nameserver given in a tutorial.