This is the best I could find (last of 4 points): http://office.microsoft.com/en-us/assistance/HP052428051033.aspx, but I wonder (and can't try) if it applies.
http://www.experts-exchange.com/Applications/MS_Office/Outlook/Q_20921533.html (your exact question) isn't helpful either (page down a few times to see the answers). I've never seen people create their own macro's in Outlook (but it can be done).
Hope this helps.
Does anyone know how to change the default "save as" file type when saving a message to some where on your computer in Outlook. The current default is to save as a rtf file format but I wish to change this to default to save as a msg file format. Any ideas?