moonmeat

I was wonder if someone could tell em or point me in the direction of a tutorial of how to change a logo? ie: Taking a Coke-cola lable and replacing the words Coca-Cola with my own name or word. I'm guessing there is some erasing involved (of the original words in this case coke-cola) and then finding the right font and making an image with my name and somehow layering it ontop of the coke lable? I really have no idea, no experience, I'm a Newbie