Just saw this little utility that some of you may find useful. It lets you wake up, shut down, reboot or log off from the PC’s on your network via you WM device. Here are the requirements:
# Wifi active on wm and connected on same local network as PC’s
# Wake-On-Lan enabled on PC’s
# allow http traffic on Port 7777
# obtain MAC Address for all PC’s you wish to ‘control’
# Currently only built for WVGA devices

You can check it out here.