Leia isto em How-To Geek . Eu acho que pode fazer o truque! Eu fiz um teste no meu computador e funcionou como anunciado.
If you want to sequentially rename files really fast in Windows 7, all you have to do is highlight all of them and hit F2 to rename them. Name the first one and hit enter. The files will be renamed somename (1).ext and so on. It’s really handy for bulk renaming vacation photos and what not.