To follow along with the examples in this book, you'll need to install the Microsoft .NET Framework, or find a hosting company supporting .NET (Eraserver offers limited hosting for free at http://www.eraserver.net).
To download the Microsoft .NET Framework, navigate to http://msdn.microsoft.com/net. After downloading and running the executable install file, you still have a few additional steps to install the QuickStart tutorials.
After the SDK has completed installing, go to the Samples and QuickStart Tutorials entry in the Microsoft .NET Framework SDK program group, and follow the onscreen instructions. You will have to click one link to install the samples and another link to configure them.