I am working on making a standalone Bluetooth hands-free device out of a PND (MyGuide 4328) I need the device to go into standby once usb power is lost (when the car engine is switched off) I can see that Miopocket has that setting with a countdown timer but I don't want to install Miopocket on this device. Does anyone know how to do this, either a small program or settings in the registry or something else. help much appreciated thanks