Windows Sidebar is actually not displayed by default on all PCs. If the resolution of
your PC’s screen is 1024×768 or less, for example, Windows Sidebar will not display
by default. To enable Windows Sidebar on such a system, follow the instructions
in “Launching Windows Sidebar,” below. Then, right-click the Sidebar and choose
Properties. In the Windows Sidebar Properties dialog that appears, check the box
titled Start Sidebar when Windows starts if you’d like it enabled by default.
For others, however, Sidebar might not be a desirable feature. To disable Windows
Sidebar, right-click the Sidebar tray icon and choose Exit. (Do not right-click the Sidebar
itself and choose Close; that simply hides the Sidebar.) Then, uncheck the option box
asking whether you’d like to run Sidebar automatically when the system reboots.