If you know your current password: Choose My Account on the Account tab and click the Edit Account button. Choose and confirm your new password and input your current password, then click the Update Account button.
If you can't remember your current password: On the Sign-In page, click theForgot Your Password?link at the bottom of the screen. Add your email address, then click the button. A confirmation message will be emailed to you. Use that link to change your password.