1. Hold down the SHIFT key on the keyboard and right-click on a 03 version of the PowerPoint file, in "open mode" → "Select Program".
2, if the installation of Third-party security software will prompt relevant documents related to the application software or "Select the program installed on the computer," Here we choose to install on the computer.
3, at this time open the computer on the "open mode" select "Recommended Program" the second is the Office2003 start program, press OK.
Tip: After setting up, open the PPT format in the future file directly in the form of a lower version, including Word and Excel also hint: You can follow this method.