You can change your email address by doing the following:
Click “My Account” on the orange bar, upper right of your screen.
In the menu on the left click “Email Settings”.
Enter your new email address and click “Save”.
On the “Optional” line you should now see the email address just added. In order to make this your new primary address you must click on the “Verify” link; this will send an email to the new address with a link that you must click in order to complete the validation. (NOTE: The delete can be used if you make a mistake while entering your new email address but only before you verify. Once verified the email address cannot be removed.)
Return to the profile management area and now choose the email address you added from the drop down and click “save”. This will now be your new primary email address.