macfidelity

If you want to have more control over your powermanagement-settings in Mac OS X you might take a look at the command pmset.

Get first informations like that:

• Open Terminal.app in /Applications/Utilities/
• Enter: man pmset to check the man page or: pmset –help for basic help
  

This should give you a first impression.

Its really offering more then Apple offers in the System Preferences in Mac OS X

Links:

• Apple Manpage
• Apple Technical Note TN2075