Managing your Stat account
Well, first you should go to this link. You may get a warning about a self-signed security certificate. This is to be expected, and proceed. Login with your current user id and password.
Changing your password
Now, on the left hand side, click on the Login button, then "Change Password". Input your current password, and then your new one two times. Click change now, and you should be good to go.
Forwarding your email
Under Mail, select "Mail Forwarding and Replies" (and NOT the other forward). You have choices:
There are other options available in the Usermin manager package. I advise caution with some of those options. There is a "Read Email" application, but I do not and can not recommend you use that as it really does a number on your inbox and makes it not appear to be a valid mailbox for any other mail reading application.