Hi - I'll preface this request by saying the host I originally signed up with can't seem to manage resolve an issue for me (non-responsive customer support, not a technical difficulty) so I'm looking for a new host. For an application I'm buidling, I need all undefined subdomains to be handled by the site on the main domain. I use code similar to the UrlRewriting class described at http://forums.asp.net/t/1072886.aspx?PageIndex=1. When a new session begins, the user's subdomain is parsed and the database is checked to see if that value (i.e., account) exists. If it does, then the user receives a login page. Otherwise, they are redirected to a signup page. I have set a wildcard A record to direct all traffic to the same IP regardless of subdomain. But on my soon-to-be-dumped host this just gets me to the generic "under construction" page for the web server. Can Winhost handle the final rewrite required to get this functionality working?