ASP.NET AJAX in SharePoint Foundation
This documentation is preliminary and is subject to change.
This section of the Windows SharePoint Services 3.0 Software Development Kit provides overview information, installation instructions, and programming examples to introduce you to the way that Microsoft ASP.NET AJAX interacts with Windows SharePoint Services 3.0 Web Parts.
Overview: ASP.NET AJAX and Web Parts in SharePoint Foundation
Installing ASP.NET 2.0 AJAX Extensions 1.0 in Windows SharePoint Services Version 3.0