OK... Have been working on 2 DNN sites as localhost for some time, all working well. I tried to point my domains to their sites, and got this redirection to /localhost... so I followed your instructions and hand modified PortalAlias (as the DNN Admin wouldn't let me delete the localhost), and how I'm getting a blank front page!! No site at all, and when I manually add any url to the site, I'm redirected to this blank page (source - completely blank):
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<TITLE>MyWebSite.com</TITLE>
</HEAD>
<FRAMESET rows="100%,*" border=0 frameborder=0 framespacing=0>
<FRAME name=top src="http://58.175.??.??/MyWebSite/Default.aspx" noresize>
</FRAMESET>
</HTML>
Default.aspx is the correct start page..