Solution found here:
http://forums.digitalpoint.com/showthread.php?t=938780
Okay… here it goes…
Just login to your phpmyadmin see the table wp_users browse that… and you will see your admin login name and other details also you will see your encrypted password. Just replace it with the encrypted code i am writing below, it will reset your password to 123456 and then you can login to wp-admin and change it.
Encrypted password to write:: e10adc3949ba59abbe56e057f20f883e
this is the exact solution of your query…