Extension of Active Directory Users and and Computers Application

General information for the business: We provide IT consultancy services
Kind of development: New program from scratch
Num. of modules: 2
Description of every module: Module One

Provide an application which adds an additional property panel to the Active Directory Users and Computers application when opening a "User" type object.

This additional panel will allow modification of the active directory properties of:

Drink:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms675651%28v=vs.85%29.aspx

extensionAttribute1
http://msdn.microsoft.com/en-us/library/ms873846(v=exchg.65).aspx

Module Two

Provide a self contained installer for Module One
Description of requirements/functionality: The Active Directory Users and Computers application in Windows Server can be extended as described in these links:

http://msdn.microsoft.com/en-us/library/ms677632(v=vs.85).aspx
http://msdn.microsoft.com/en-us/library/ms674989(v=vs.85).aspx

The resulting application should provide an extra tab of properties when viewing a user object that allows modification of these two attributes (Drink and ExtensionAttribute1)

The extension should be written in visual basic (Visual Studio 2013 or Visual Studio 2010) and all source code should be provided so that we can perform further modifications.

Here is a good example of an application that is very similar/same to what we need:

http://www.schakko.de/2009/03/19/aduacet-released/
Specific technologies required: Visual Basic, Active Directory, Windows Server
OS requirements: Windows
Extra notes: