I have an issue where I have installed DNN in IIS and it all works when I do http://localhost/dotnetnuke but not outside of  the local network.  I know the first thing people are going to say is that it is not a DNN issue and to resolve it w/ a static IP and point to my machine or use no-ip.com redirect.....but I actually have set up no-ip.com and my domain to redirect to another port since my ISP blocks port 80 and whenever I put a default.aspx that contains "hello world!" as my default document in C:\inetpub\wwwroot I can see it from outside of my machine / local network when going to mydomain.com.  But whenever I try to to go to mydomain.com/dotnetnuke, it does not work... it tries to bring up http://localhost/dotnetnuke instead of my dynamic IP address through no-ip.com redirect.  I am curious as to if there is a setting I am missing or what the deal is and why I am experiencing this issue.  

Also, is it possible to make an application a "default document", so instead of typing http://localhost/dotnetnuke one can just type http://localhost and get the same thing?

Thanks in advance!