What I want to do is create a Joomla site in a Dreamhost VPS, view it, correct it, THEN point the nameservers to the site to put it online.
With the many hosts I have used in the past, this was simple to do, and the welcome emails told how to do it. It has always been normal to set up the site the minute the server is assigned, not to wait 2 days for the nameservers.
A long chat with Tech Support basically said to wait for the nameservers to propogate, then set up the site. Tech Support was friendly, available quickly, gave many correct details that were not the question, e.g. how to FTP to the site. But nothing about how to view the site before putting it online.