MC...to add a signature, simply click on PROFILE, then EDIT PROFILE. Go down to the signature area and enter whatever text you'd like to have. To add an image, you must have it hosted in space that allows hotlinking of images. If you have that, just enter the address with the code before and after. The second one should have a / between the opening bracket and the IMG. I'm not sure if the rules are different for AT&T down there. Up here, they don't allow hotlinking. So, you'll have to find somewhere else to host your images. Hope this helps.
Ann