Happy to say that I have presented today in Microsoft Virtual Tech Days(VTD) on ASP.NET AJAX Library(BETA)
You can download the presentation here: http://www.slideshare.net/novogeek/introduction-to-asp-net-ajax-librarybeta
I have also uploaded working demos. You can find them here: http://labs.novogeek.com/VTD18Mar2010/index.htm
Regarding the demos, I have converted the aspx files to .htm files, so that you can simply save the demos from the browser. (Same code as shown in VTD).
Please let me know in case of any issues. Thank you once again for the warm response