Taskbar
When you open a program, its icon is displayed at the taskbar for you to conveniently move between programs by clicking the relevant button.
To add or remove toolbars from the taskbar: right click an empty spot on the taskbar, select Toolbars 
choose the
toolbar you want to add.
Notification
The icons that appear here are for quick access to some programs and computer functions that you frequently used. To prevent Windows Vista from hiding icons:
From an empty spot on the Taskbar, right click your mouse and select the Properties, remove the checked mark on the