I've seen a lot of articles about integrating Outlook 2010 with Windows Live Messenger 2011. While this appears to be very easy, I'm running into a problem because the windows live IDs of my contacts are different from our exchange account IDs. For example, my contact is email@example.com, but his live account is firstname.lastname@example.org. When I try to "begin a conversation" from within Outlook 2010, Outlook tries to look for a "Windows Live" contact named email@example.com which doesn't exist.
Is there any way to synchronize the two? Ideally I'd like to be able to "associate" firstname.lastname@example.org with email@example.com so that I can initiate an IM conversation from within Outlook.