The minimum set of system requirements is reviewed in the Installation section. Installed .NET Framework is the only "must have" software component that is required for CS-Script engine to run.
Notepad or any other text editor is a minimum toolset required to create a script file. However development time and effort can be significantly decreased if CS-Script is used in conjunction with any sort of IDE.
CS-Script files (.cs) can be opened with any supported IDE/Debugger/Editor by using appropriate shell extension just with a mouse right-click. Some of these shell extensions are installed by default. To install/uninstall a particular shell extension a special installation script (debugger.cs from the Script Library ) has to be executed (see Script Library).
Read about usage CS-Script with just some of the common IDEs, debuggers and source code editors:
.NET Framework SDK
Microsoft .NET Framework SDK tools
MS Visual Studio v 7.1
Microsoft Visual Studio 2003
MS Visual Studio v 8.0
Microsoft Visual Studio 2005
SharpDevelop (Open Source IDE).
Notepad++ (Open Source C# aware text editor).