click and drag your photo you want to your desktop. Then go to
imageshack click on browse, go to where you put the pic double click it then click host. copy the first link at the very top, then come back to the mob forms. Go to my profile then to the bottom left of your profile click on edit signature. Then click on the img tag, right click in thge task bar and click past then ok, at the bottom of the page u should see update signature,click it. You should be set to go. If you have any questions let me know. ty