OK! In your personal page (see upper right on page here..it says inpain's Profile ??? click on that. THEN click on the first line of preferences EDIT.

Scroll down that and you will find a window for a signature. I would suggest you try just words first.. till you're sure you're doing it correctly. Then you can go hunting a picture or such with which to replace the wording... THEN go all the way down to the bottom of that page and click SUBMIT.

MP has made many of the siggy's here..but there is a link (do you know how to use the advanced search for the site? she gave a link for photobucket which teaches you how to make your own pics etc.) (That's MentalPollution, btw.)