SharePoint Password Change has been just released by SharePointBoost. This is one SharePoint Add-on product.
It contains two main parts, one is Password Change Web Part, and the other is Password Expire Warning Web Part.
Password Change Web Part can inform user to change password in a SharePoint portal site without the intervention of site administrator or visiting expiration pages. Password Expire Warning Web Part will send the user an message in the webpage before his/her password expires.
You can get more information by visiting:
http://sharepointboost.com/passwordchange.html
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