Do this by locating the file in your folders and double-clicking on it.

If you want to open a new Powerpoint 2007–2010 file instead of work on an existing one, just double-click the Powerpoint 2007–2010 program icon on your desktop instead.
 Under Illustrations along the ribbon tabs at the top, click on “Chart.” An Insert Chart box will appear, allowing you to choose a chart style., Go through the options, and once you’ve clicked a chart style you want, press “OK.” The chart will appear, along with the Excel data sheet it is associated with., In the spreadsheet, enter the data you wish to assign to the segments by entering them on the cells., Now, you can name the segments by entering the names on the leftmost column and top row.

The changes here will reflect in the Powerpoint 2007–2010 file.
 Do this by clicking on the default “Chart Title” field. Once clicked, the text box can be edited, where you can type the name you want to give it.
Open a Powerpoint 2007–2010 file.
Insert chart.
Select a chart style.
Add values.
Label the chart.
Name the chart.
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