We did not create an installer for it because it's a bit complicated on Windows, we only distribute the archive. We recommend you create a shortcut for the executable at any convenient place. The executable is in the subdirectory bin and is called siril.exe. ** UPDATE of Feb. 2, 2018: A second version of this package is now provided. This version, called 0.9.8-001 fixes a bug with some SER files.