Original URL: http://help.hardhathosting.com/question.php/99
When you add/modify any part of the DNS records (add domains, subdomains, cname records, etc) it will take anywhere from 8-24 hours (depending on your ISP) for the changes to propagate throughout the internet.
Let us know when it has been longer than 24 hours since you have added/modified the domain records in the control panel.