Ok, i just checked mine. You have to wait for the master domain to be ready (the onlinehom.us one). When it is you ftp to that server and use the user login descriped in the webspace -> ftp section (it is dif than your master login). Once your new registerd domain is registerd and has DNS servers then you can just ftp to it instead of the onlinehome.us master domain. make sure you use the username in the ftp section.
Both the default domain and my new one are ready. Have been. According to the website, I should be able to FTP to both (and the files go to the same webspace. I'll try the default when I get home and out from behind THIS firewall, and back to the firewall I can manipulate at home