In order to be able to work with ASP.NET AJAX Control Toolkit, the following should be available:

·         Microsoft Visual Studio 2005 (any version) or you can also use the free of cost Visual Web Developer Express 2005.

·         Download ASP.NET 2.0 AJAX Extensions and install them on your computer after installing Visual studio 2005.

·         Download ASP.NET AJAX Control Toolkit and install it on your computer after installing Visual studio 2005 and AJAX Extensions. You can also download the Toolkit directly from CodePlex project site.

·         After the completion of installation, open Visual Studio 2005 or Visual Web Developer and add a tab in the Toolbox named AJAX Toolkit.

·         Right Click in this tab and choose add items. Browse to the sample directory of where you did extract the Toolkit, then to bin directory and choose the file named AjaxControlToolkit.dll.

·         This is all. You have installed AJAX Control Toolkit and you can start building your controls.