As far as I know there is not a built-in modal control that gives you a design-time surface. I always make a separate login page for my applications. That way they do not get to see anything until I want them to.

You could also do it with regions stacked on top of each other. You would only set one region visible at any given time. If you still want modal dialogs, you should checkout [CG Dev Tools|http://www.cgdevtools.com/]. They offer a really nice set of controls that allow you to add more style and functionality to your interface. They have a couple of dialog controls that give you the popup modal behavior. One of the controls gives you a design-time surface that you can place other controls into, and allows you to add custom buttons. There are also functions in the library that aid you in building asynchronous functionality.

hi Erich,.

i don't know how to make a Login popup window, but i wouldn't recommend it.
there are many programs, browser-plugins and browser-settings that can block pop-ups, so that can mess things up for you users if you think about a login window.

like Daniel, i too made a page for the login.
i set my Login page as my main page, and in this page there is a nice "Welcome" design, and some more important slow-scrolling information for my users.
i really think that is the best way for the Login.