Okay - same would apply, if the nameservers are pointing somewhere else. You can check by going to Domains -> Registrations.
Then, if your domain doesn't already show up under Domains -> Manage Domains, click the link to add it and that will walk you through the process.
If it's already setup and the nameservers are right, but you can't see it, you might just need to wait a day or two.
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