The technology that offers and alternative to DSL and high-speed cable is broadband connection which is a term used for high speed internet access using coaxial or fiber optic cables to reach higher speeds than the other technologies. The technology described in the question is "Broadband Over Power Line" which as the name suggests, makes providing broadband internet connection possible using the power lines in the area.
The best way of doing this would be when you are opening a document application, the first thing that you would do in this case in to click "new". And by clicking new, you would have a fresh new spread sheet.