I run Windows XP Professional. Today the...

I run Windows XP Professional. Today there showed up a second layer of taskbar. It has ''Desktop'' in light blue, ''My Documents'' ''My computer'' and ''My Network Places'' shown in white with icons. Unable to click on right arrows to hide them. On right under the time is listed the day of week and the numerial month-day-year. Unable to drag these items anywhere or otherwise delete or hide this extra layer of bar. Looked within Task Bar options in ''My Computer'' clicking ''horizontal'' without any change.