Create a button that opens the default email app, and sends attach

[CatatonicBug]

I am making a survey document in Word, and I need to create a button at the
bottom of the screen that opens a new e-mail message in the default e-mail
application on the user's PC, and attaches the doc to the e-mail. It needs to
have a pre-determined subject line, and e-mail address built-in to the
button. I am clueless as far as telling buttons how to do things, so I need a
cut-and-paste, fairly descriptive explanation. I can make a button show on
the screen, but I can't figure out how to tell it to do anything.

Thanks,

CatatonicBug