Active Directory + Test Application (VB6 App/C#.NET DLL)

This project is to write an Active Directory DLL in C#. And also to write a VB6 client which calls DLL methods. The DLL needs to implement: 1) User authentication (username and password) 2) Check whether a user is in a certain user group 3) Return all users in a certain user group All parameters need to be passed from the VB6 client. Quite easy for someone who knows how...