Hi,
First you should Enable the Developer tab in Word, then create Macro and create a button for the macro and so on.
This can be achieved based on VBA. Try to view the follow article.
How to Send Word Document As Email
http://www.howto-outlook.com/howto/senddocasmail.htm
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Sincerely,
harry