First, make sure you have placed an index file (ex. index.html) in the public_html directory. Next, make sure your domain has resolved to our name servers. You can do this at http://www.internic.com/whois.html. If you have verified that you can see the index file in your public_html file, AND that your DNS has resolved to our name servers, try one more thing. Close your internet browser, delete all temp internet files, cookies, and clear the history. Then turn off your computer, and turn off the power to your modem and router to reset the DNS information.  Then turn everything back on again and try to access your site. If you still cannot access it, please contact the support department.