http://blogs.technet.com/kailash/archive/2007/08/07/ajax-and-moss.aspxI've heard a few of you ask about AJAX in MOSS 2007. Yeah, OOB MOSS doesn't support the ASP.NET AJAX framework, so here's an interesting bit of reading for you – thanks to Jose , whose post, I picked it from: AJAX is not a specific technology but a setenCommunityServer 2.1 SP1 (Build: 61025.2)