ok, find the pic on the web you want to use.
right click on it and choose copy image URL.
then in your ecomodder message, click on this
then pres ctrl-v to paste-in your chosen image URL. then click the OK button.
if you;re using your own images from picasa or something the directions could be a bit different.
so perhaps you need to tell me if the pic is your;s or not... if it is, then tell me where you stored it.
instructions for sending pics from your PC will take a bit more steps.