This topic is made slightly confusing because you have an email that's associated with your Live ID. That's the email you log into the profile with (via Live ID). 
However, you might want to change your email where you receive alerts from the Forums, Wiki, Gallery, and other apps.

  1. Log into the blogs site (  or Wiki (
  2. Click Settings on the top.
    • NOTE: That “Settings” link isn’t available on the Forums or Gallery. 
  3. Update your Private Email.
  4. Click Save.

You also might want to check there to make sure your time zone is accurate.

See Also

How to Request Your Email or Live ID Changed on an MSDN or TechNet Profile