While familiarising myself with Norton System Works, I checked what I thought was Dock, in the View menu of Norton System Doctor. The sensor information moved to the top of the desktop. Not sure what I did next,but all doctor info disappeared. Could be autohide? Help does not explain how to deselect autohide. I now have windows that do not fill the whole screen. Everything has moved down approx one inch, including icons on desktop. I am running WinXP Pro, can anyone help me get my desktop back to normal?