Design / Preview in Web Browser is missing domain

Before, our development machine was on the same subnet as the developers, so when we selected Design | Preview in Web Browser with the database on our development server, it worked. Now, with the move, it no longer works. We need to be able to add the domain name to the address that is generated. For example, this is what we get:

http://notes6/web/connect.nsf

We need it to say

http://notes6.datatel.com/connect.nsf

How do we add that .datatel.com to the default address for Preview?