If you're hosting a web site with StormWeb, but using a domain registrar other than StormWeb, you will need to set the nameservers for your domain at your domain registrar.
For web hosting plans, you should configure the nameservers as follows:
NS1.STORMWEB.NET
NS2.STORMWEB.NET
For VPS hosting plans, refer to your welcome email for the correct nameservers for your VPS. Please note that for VPS plans with the CloudPanel control panel software do not include a nameserver, so it will be necessary to manually set DNS records instead.