Sisulizer uses .NET tools when scanning and building .NET files. There are two kinds of .NET tools. Some are included to .NET framework (e.g. runtime), some other are included to .NET SDK.
Runtime directory is the directory where .NET framework has been installed. It contains the basic tools and library files. Every computer that runs .NET applications must contain runtime directory. Normally it is installed to C:\Windows\Microsoft.NET\Framework\<version> directory where <version> is the .NET version number. For example C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727 contains .NET 2.0.
.NET 3.0 and 3.5 contains their own directories but they also use the directory of .NET 2.0.
SDK directory is installed with .NET SDK. It contains build tools and libraries. Normally you have SDK installed on developers computer only. Visual Studio and Borland Developer Studio install SDK directory. For example Visual Studio 2005 install SDK directory to C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0.
In order to completely scan .NET assembly files (.exe or .dll) and to compile localized resource files (.resx) Sisulizer needs to know the location of the .NET SDK (e.g. C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0).
SDK directory is optional. If no value is given Sisulizer does not compile localized resource files and satellite assembly files when localizing .NET project files (e.g. csproj), and Sisulizer does not extract complete menu and container hierarchies when localizing .NET assembly files. We strongly recommend to install .NET SDK to make it possible for Sisulizer to use the SDK tools. SDK is installed with Microsoft Visual Studio or Borland Developer Studio. If you do not have .NET SDK you can download it from Microsoft's site.