Power of web.config changes in Asp.net 1.1

To inherit my asp.net page from our custom developed page.
All asp.net pages are inherit from System.Web.UI.Page class
for example
namespace Myproject.web
{
public class MyCustomPage: System.Web.UI.Page
{
}
}
public class Login: MyCustomPage
{
}
Instead of this we have a better workaround for this process.
Add the following tag in our web.config entry, by doing this whenever we add aspx page to our solution it automactically inherits from "MyCustomPage"

its really works wonder....
Reference article:http://ryanfarley.com/blog/archive/2004/06/08/766.aspx