关于如何在C#程序中访问windows用户的密码：

·         Reset Windows Administrator Account Password in C# - How to Reset Windows Administrator Account Password in C# (Silently)

·         Quick and easy user-level security checks - A library to manage the low-level details behind user-level security.

·         Changing Windows 2000 Password in C# - How to change your windows 2000 password through C# project, and this method should also works in Win2003.