Taskbar and Start Menu Properties —
Control Panel → [Appearance and Themes] → Taskbar and Start Menu
right-click on an empty portion of the Taskbar → Properties
right-click on the Start button → Properties
Start → Settings → Taskbar and Start Menu (Classic Start Menu only)
Use this dialog to change the appearance and behavior of the Taskbar, notification area (commonly known as the tray), and Start Menu. All the settings here are listed in Chapter 4.
Probably the most important setting here is the choice between the new XP-style, two-column Start Menu and the simpler, "Classic" single-column Start menu found in earlier versions of Windows. Click Customize to selectively show or hide certain items in the Start Menu, appropriate to the style you've chosen.