On Ubuntugeek I found this post:
Its about renamer. Renamer is a small python script for batch renaming files in nautilus.
Preparing your system
Install following packages from your terminal
sudo apt-get install python-notify
Install renamer in Ubuntu
First you need to download Renamer from here .Now you should be having 87601-nautilus-renamer.tar.gz file extract this file using the following command from your terminal
tar -xzvf 87601-nautilus-renamer.tar.gz