Wait for the yellow bar at the top, then click the yellow bar, followed by "download file"
Accept the license agreement, then click "next"
Go ahead and let it check for updates.
Uncheck this box and hit "next"
Finish. It's up to you whether you let it protect your home page from changes on the screen that follows.
Choose "preferences" on this screen
Uncheck the two boxes at the upper left, "Start Super Anti Spyware when Windows starts" and "Show Super Anti Spyware icon in system tray". Click "close".