This is done through the 'Accounts' section in the Control Panel.
Step 1.
Click on the 'Accounts' tab.
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Step 2.
Click on the 'My Account' button.
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Step 3.
Click on the 'View/Edit Account Information' button.
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Step 4.
Type the new e-mail address in the boxes marked, 'E-mail Address' and 'Confirm E-mail Address'.
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Step 5.
Click on the 'Submit' button to save changes.
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