What is the .NET Framework?
The Microsoft .NET Framework is a platform for building, deploying, and running Web Services and applications. It provides a highly productive, standards-based, multi-language environment for integrating existing investments with next-generation applications and services as well as the agility to solve the challenges of deployment and operation of Internet-scale applications. The .NET Framework consists of three main parts: the common language runtime, a hierarchical set of unified class libraries, and a componentized version of Active Server Pages called ASP.NET.
It is Microsoft’s newest tool for developing modern applications. Its similar to the move from DOS to Windows in the mid 90s. If you don’t have the Net Framework than it would be the equivalent to you continuing to run DOS applications. The Net Framework is FREE and will be included in the next version of Windows. If you’re running Windows 98 or later you can install the Framework..