The following files are provided to allow .NET use: AutoItX3.Assembly.dll - The .NET Assembly for using AutoItX. AutoItX3.Assembly.xml - The Visual Studio Intellisense help file for the .NET Assembly. AutoItX3.dll - The main AutoItX DLL (x86) AutoItX3_x64.dll - The main AutoItX DLL (x64) Using the Assembly from VB/C# within in Visual Studio is very easy: Add a reference to AutoItX3.Assembly.dll to your project Add a using AutoIt; statement in the files you want to use AutoIt functions Write code