Click on 'User CP' (upper left corner of the home page)
Click on 'Edit Signature' (left side of screen, scroll down a little)
Scroll down a bit, under the text box (where you put this "Water...
and to think we used to wash automobiles with it." - blipco 2109 A.D)
You'll see a box called 'Signature Picture'.
Just make sure the map meets the picture size requirements, then chose your upload
option, either works.
Once you've picked your option & entered the location of the picture, hit the 'upload'
Once that's done, hit the 'preview signature' button to see what it looks like before you
submit so you can see the results.
Once you're happy with it, hit the 'submit' button & you're done!!