Go to http://mail.mbl.edu
On the left navigation bar, click on Webmail Settings.
The following screen will appear - a link to password information is located directly below the Webmail settings link.
Click on Password on the left navigation bar.
The following screen will appear.
Enter your current password in the Current Password box.
Enter your new password in the New Password box and in the Re-enter New Password box.
In the e-mail Password to box, enter a email address to which you would like to have your password sent in the event that you forget your password.
Click on Modify.