As far as I know this should apply to all versions of Excel.
Look at the toolbar at the top, third along is "VIEW". Select this and then "Page Break Preview". When you do this you will see blue lines which denote the edges of the page as it stands now and some grey text saying which page that part of the spreadsheet is on. Drag these vertical blue lines to the right hand edge and the horizontal ones to the bottom. You should now see one lot of grey text saying "PAGE 1". Job done!!