Corporate user unlocks Windows 7 password with a Credential Provider

Content:
- User locks out Windows 7 login password.
- User presses a "help" button to access self-service.
- A kiosk-mode web browser is launched.
- User enters his network login ID.
- User answers security questions.
- User chooses a new password.
- Web browser is closed.
- User signs into Windows with the new password.

Key concepts:
- Access to self-service password reset from a locked out Windows 7 PC.
- The UI extension is via the Credential Provider infrastructure.
- The native login screen is extended to include an unlock button.