By default, the Ranger.dll is installed in the same location as Ranger.ocx:
Quote(64bit OS): C:\Program Files (x86)\Silver Bullet Technology\Ranger\Ranger.dll
Quote(32bit OS): C:\Program Files\Silver Bullet Technology\Ranger\Ranger.dll
If your application is not using the default path or Ranger installer for placement of files, the easiest place to put Ranger.dll for an application to load is in the default paths searched by Windows for a LoadLibrary call. The first of these paths is the same path as the executable file itself so your code could just be LoadLibrary("Ranger.dll") in that instance.
The best practice is to provide a fully qualified path to the Ranger.dll to ensure you load the DLL you intend to load.
For more information on LoadLibrary search order,
Ranger.dll requires there to be a Scanner Plug-ins folder in the same location as the Ranger.dll so that plug-ins may be located and loaded properly.