well, it's easy to do a signature if you have photoshop (at least that's what i'm using).
just open a 480x60 new file (or what size you want your sig to have), paste a picture on it, and start playing with it
at www.adobe.com you can find the instalation kit for a free trial which will work for about a month and then it will ask for serial code or something.
if you need a crack for it, pm me