Here is a link for the fix for the unified messaging on Outlook 2007. This is only for systems running the vpu voicemail that uses um client v2.2XX. If you are running enterprise messaging with um client V2.3XX, it requires a different fix. Email me if you need that one.

https://www.yousendit.com/transfer.php?action=download&ufid=bVlCWWVvQTZoMlVLSkE9PQ