Is there any free downloadable programs that will allow me to add a watermark copyright to my pictures? I have the program Aperture with my Apple...I have searched the help menu and it says I can add a watermark by creating one and saving it as a photoshop file. I do not have photoshop. Any suggestions...

I was wondering if you could give me your opinion on something. I have a customer that has requested that I not put my watermark on the front of her pictures. She said that they take away from the photos. I put - © Doodlebug ’07 - in the bottom right corner of all of my prints. I put it very small so...