It may still be DNS propagation that you are waiting on.
To find out (windows instructions appear below):
1- open a command window (start button and type cmd on vista or win7; start->run-> cmd on XP or before)
2- in the command window type "nslookup yourdomain.com"
3- take the IP address from the last line of the results and do a second nslookup.... i.e. "nslookup 126.96.36.199"
4- If your computer is reaching the dreamhost server that line will say "apache2-vat.SERVERNAME.dreamhost.com (SERVERNAME should be the name of your server.)
If you are not reaching your server on dreamhost you might want to go to your domain on the "manage domains" page of the panel and click DNS, then on the next page click the "GO" button to refresh the domains DNS.