There are several sections in the account setup window which is accessible through the My Account tab at the top of the page.
Clicking the View My Profile Link takes you to your profile.
You can change the email address that notifications are sent to here
You will need to enter your old password and enter the new password twice. Remember to click "Change" when you are finished
This section lets you add unique signature lines to your email and forum postings.
Here you can add custom Status indicators