He accidentally enabled the stickykeys applet and wants to know how to shut it off.
what happens when you click or right-click the sticky-keys icon in the system tray? Is there not an option to quit?
EDIT: Nope, I just checked.
Failing that- open control panel, select Accessibility options, And on the keyboard tab, you can disable those features you don't want. (I for one, have them all disabled).