I opened up Task Manager, using ctrl+alt+dlt. I touched a key, or 2 keys on the keyboard accidentally, it must have been a toggle function, because all of the manager disappeared apart from the pane with running programs in it. It is literally just a box with the programs in it - no bar at the top, only the 'end task' 'switch to' and 'new task' buttons remain.... anyone know how I can get it back to its original state?