They say “there’s more than one way to skin a cat,” which may or not be true. Actually, I’m not sure I want to know how true that is or isn’t. There’s no denying however, that there’s nearly always several ways to do the same thing in Windows (s MSFT). On my netbooks, notebooks and UMPCs, I tend to use the Mobility Center or Power applet in the system tray to switch my power plan as needed. The How-To Geek offers another method and it might be just the right option for a touchscreen device, although it certainly works for any Windows machine.
Using the powercfg command in Windows Vista or 7, you can sneak a peek at the internal GUID indicator for your pre-configured Windows Power Schemes. Armed with that info, you can easily create desktop shortcuts for any and all of your Power Schemes: just double-click or tap to switch ’em!