I have already purchased my domain name through Hover and added the domain to Dreamhost and installed Wordpress one click. However, when I click on the Wordpress Install link that was emailed to me, I am redirected to the Hover site. I’m under the impression that I need to register the domain with Dreamhost, but how do I go about doing this? I have already changed the name servers on Hover to ns1.dreamhost.com and ns2.dreamhost.com.
After the nameservers are changed there is a delay for DNS propagation. Most users in the USA see this occur in 12-24 hours, it can take up to 3 days to complete worldwide.
To by pass the delay you can go here http://wiki.dreamhost.com/DNS_-_Viewing_site_before_DNS_change#An_Even_Easier_Technique:_Switch_To_or_Add_DreamHost.E2.80.99s_DNS_Servers.21 and follow the instructions to point your local machine to dreamhosts DNS servers. If you elect to follow I would recommend undoing the change in a few days. Another approach if you have multiple local computers is to set one to use dreamhosts DNS while another relies on the DNS supplied by your ISP.
You can also elect just to wait out the change. Flushing your local computers DNS cache may also speed the process. Directions here: http://wiki.dreamhost.com/Clear_cache#Clearing_DNS_Cache