Disable Microsoft Advertising On Outlook

[ThomasLafferty]

I recently noticed that Outlook has been adding the following to the bottom of my outbound messages:

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Click the following link to get a map and driving directions in Live Search Maps: [URL unfurl="true"]http://go.microsoft.com/fwlink/?LinkId=65850&WIP=12[/URL]

Free! Download Live Search Maps for Outlook at [URL unfurl="true"]http://go.microsoft.com/fwlink/?LinkId=64085[/URL] today!
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How do I disable this feature?

Born once die twice; born twice die once.

 

[ThomasLafferty]

Follow on to previous:
apparently it is only doing this in meeting invitations. I am running Outlook 2007.

Thanks in advance.

Born once die twice; born twice die once.