Whenever I prepare a document in Word and want to send it via email I click on the email icon at the top, but always comes back with:

"There is no email program associated to perform the requested action. Please install an email program, or if one is already installed, create an association in the default program control panel"

I have a gmail account set up. I can go to control panel and bring up the default programs but how do I make the association to Word?