Do you see the little buttons located on the bottom of the monitor? See them? Look down...there you go. Play around with those for awhile until you get the screen how you want it.
this i'm sure is easy to fix, but just can't think of how to change the setting. the question is our desktop has changed. there is a half inch border at the top and on the right side but no border at the bottom and left hand side. the icons on the left are halfway under the black plastic around the edge of the screen. it is a dell dimension 2400 windows xp. thanks, alan.