Members area in subdomain (wildcard DNS setup) with GoDaddy

When you signup for an account at [login to view URL] they automatically create a member area in subdomain. For example, when you choose as secure page login 'developer' it will create the subdomain [login to view URL] where you can access your account. All we need is someone to assist us (show us how to and if possible do it for us) to setup a similar configuration in our domain using a GoDaddy account. I have made some search and it seems to be called 'wildcard DNS setup' and it works with a HTACCESS file.