To add an image to a contact's listing you:

Click the Picture button on the Options group on the Outlook Ribbon and then browse to where the image is located.

Click the Picture Placeholder next to the contact's name and then browse to where the image is located.

Click the Insert box next to the contact's name, click "picture" from the drop$-$down menu and then browse to where the image is located.

Click the Image button on the Insert group of the Ribbon and then browse to where the image is located.