>For those interested in so-called Rich Internet Applications (RIAs) there is an interesting article discussing the use of Flash and Adobe Flex for building UIs, as opposed to AJAX or Java:
>
>http://ajaxworldmagazine.com/read/333329.htm

Thanks a lot for a very intersting link.

Just to add alternatives, did you check WPF/e?
http://msdn2.microsoft.com/en-us/asp.net/bb187358.aspx

In my view, it is Microsoft attempt to Flash, but it is very interesting, most than anything because it is supossed to be truly cross-platform and cross-browser.

Regards,