What is .NET Framework and why do I need to install it?
The Microsoft .NET Framework is a software development package that can be installed on computers running Microsoft Windows® operating systems. It is an optional installation with the Microsoft XP Service Pack 2 update, and a standard feature in Windows Vista and Windows 7. The Sample Test delivery utilizes Microsoft “Click Once” technology and requires .NET 2.0 (or later) to be installed on a computer in order to run properly.