I have 10 folders of pictures that have approx. 40 pictures a piece in each. i want to add them all to one folder and re-name them with 4 digit numbers sequentially. as of this point in time, all 10 folders have "untitled-1.jpg" through "untitled-40.jpg". does anyone know of a batch file re-namer that will let me end with with one folder with "0001.jpg" through "0400.jpg"?