To see the full, unmangled headers if you are using Windows Live version of Hotmail You have to be using the "Full" Version, not Classic.
To view the e-mail header information:
 | In the left pane, click Mail. In the Folders list, click Inbox. Right-click the message in the message list, and then click View source. |
A notepad window will open up with all the details in it. ID Removed 
where it says X-Originating-IP
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