How to create a MS Windows local account by program

There are several ways to make it happen:

1. PowerShell solution: http://stackoverflow.com/questions/383390/create-local-user-with-powershell-windows-vista
2. .Net solution: http://msdn.microsoft.com/en-us/library/bb384369.aspx#Y200
3. Using Active Directory Service Interfaces (ADSI) COM: http://msdn.microsoft.com/en-us/library/aa705985(v=vs.85).aspx