The following are some references to XForms
Wikipedia XForms page
Go to IBM Alphaworks and then try: demo/flash/display/cxde3 IBM GUI Demo
Here is a nice intro from the IBM developer works. The Wikibook spam filter does not allow the direct link so you will have to put in the link to the IBM developer works web site and add "xml/library/x-xformsintro1/?ca=dnw-732"