Manning have a book called AJAX in Action. I read portions of that, and rolled all my own AJAX code, it's really not hard. IF you're looking for a bunch of cool AJAX controls, that's another question, but if you just want to use AJAX, then there's no reason to need any framework.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )