Here is this but its not free
Complete Password Management with Password Manager from Quest Software
Complete Control Over Password Management
Quest Password Manager
allows end users to reset forgotten passwords
securely, allowing administrators to implement stronger password policies
while reducing the help desk workload.
The pain of password management - the single most common support issue - is becoming more pervasive. Requiring more complex passwords that must be changed more frequently increases the likelihood that users will forget them. As a result, many organizations face the challenge of increasing security while reducing support costs.
Password Manager provides a simple, secure solution that allows end users to reset forgotten passwords and unlock their user accounts themselves
. Password Manager accommodates the widest possible range of organization requirements and data security standards.
Password Manager supports Windows 2000/2003 Active Directory
environments and connected systems. Organizations no longer have to sacrifice security to reduce costs.