ACPI: Advanced Configuration and Power Interface
Outlines how to patch a kernel for ACPI support.
more >>>

Athlon Powersaving HOWTO
How to enable the power-saving functionality of the Athlon/Duron/AthlonXP processor on some motherboards/chipsets. This is usefull for saving Power and lowering the Temperature of the CPU and the System. (It also will reduce noise if you use temperature controlled fans in your case/on your cpu heatsink.
more >>>

Linux Desktop: Using DPMS to reduce your power-bill
DPMS is used to communicate between your monitor and computer to make your computer turn off your monitor when you have been neglecting it for a given period of time. Recently I have been surprised to find out how many people don't seem to have DPMS setup on their Linux Desktops and it seems to be partially just cause they don't know how. So lets fix that.
more >>>