Has your domain come online yet? It usually takes a day (sometimes two) for DNS to propagate after you register a domain. During that time you can upload your site to your server, but not be able to get to your domain name.
What happens when you type your domain name into your web browser? If you get an empty directory listing, that probably means that you uploaded your site content to the wrong place. It needs to go into the 'yourdomain.com' directory, which is inside of your home directory.
If you need technical support, though, you should definitely contact our Support Team at email@example.com. They'll be happy to help you out.
- Jeff @ DreamHost
- DH Discussion Forum Admin