Modifying the Power Scheme using Batch Files in Windows XP

Question

I'm trying to write two batch files that will allow me to switch the Power Scheme (Control Panel -> Power Options -> Power Schemes Tab) from Home/Office Desk to Portable/Laptop and back. My operating system is Windows XP SP3.

My reason for doing this is because I want to disable SpeedStep when I'm playing games on my laptop (i.e. put it on the Home/Office Desk scheme) and enable SpeedStep otherwise (back to Portable/Laptop). Windows XP turns turns off dynamic switching in Home/Office Desk mode. I'd like to be able to do this programatically to save myself some time everytime I want to play a game.

Any thoughts on how to modify the power settings using a simple batch file? Python and Ruby scripting is also an option but isn't preferred.

Answer 1

C:>%windir%\system32\powercfg.exe /?

    /SETACTIVE, /S  Makes the power scheme with the specified name active.
Examples:
    POWERCFG /SETACTIVE scheme