Maybe I should do some Web 2.0 development to add UI controls and effects to my library. Currently I'm still concentrated on doing the AJAX stuff. I will do some more tests with Web 2.0 frameworks like the Yahoo or Google framework. Yahoo has done a lot of great work on controls, and as I can see it should be very easy to use Ajax.NET Professional with the Yahoo UI controls. I will put some examples online the next days, hopefully.