Bob,
I think the problem is that the integration between the various Office
applications (whatever version) and the email client (in this case Windows
Live Mail) isn't working as expected; that is, trying to use the version-
and application-specific analog to the "Send To > Mail Recipient as
Attachment" functionality is not producing the desired result - which I
assume is the automatic creation of a new email message with the selected
document attached. Unfortunately, I don't have an answer to this problem
apart from recommending that the document be saved and the native
functionality of the email client be used to create the message and attach
the document. This sort of seamless integration between Office applications
and the email client exists with Outlook, but I'm unsure of how to configure
a similar degree of integration with any other email client, including WLM.