I am using Microsoft Office 2003 with Lotus Notes 7.0.3.
In Microsoft Word 2003, there is a function where you can attach the word document directly to your mail recipient.
(At MS Word -> File -> Send to -> Mail Recipient)
However, my mail recipient link is greyed off (disabled) in MS Word 2003. Lotus Notes is my default e-mail program. I updated my MS Office to the latest updates but problem still persists.