This file will allow you set the default time for the iPod screen to dim, but not lock. This is helpful in saving battery life, as well as being pretty cool. Simply connect to your iPod via SSH, using WinSCP, CyberDuck, or whatever you use to connect. Then drop the attached file in /Applications/Preferences.app Don't forget to change permissions on the Preferences.app folder to 755 recursively. Open up your Settings app, check under the Brightness category. Enjoy.