Danielle, you need a web code to attach it to your signature. You could either use photobucket as described in this thread by Barbara or if you want you can email me the picture and i will put it through my imageshack and give you the code to use. It only takes me a minute to get the code so i am happy to help you if you want .
P.S I have mine rather large at the moment but am going to go back into it today sometime and make it smaller