[imug-users] How do I get rid of, or change picture on the top right of my emails

[rgreen2001]

Hi, when I send an email, I have a picture on the top right of my
email. It is one I thought I deleted from my iphoto a few weeks ago,
and somehow it is embeded in my emails on the top right of every one.
How do I get ride of it. How do I perhaps add a new photo.
Thanks