How to Set an Older Version of MS Office as the Default to Open Files

Getting Started
1. Open Windows Explorer.
2. Right-click 'My Computer' and select 'Properties.' 'My Computer' may be displayed as 'Computer' on some versions of Windows.
3. Read the information on the 'General' tab to determine the version of Windows installed on your computer.
Windows 7 and Vista
4. Open 'Control Panel,' then 'Control Panel Home,' then 'Default Programs' and 'Associate a File Type or Protocol With a Program.'
5. Select the file extension (such as .xls) that you wish to associate with a different version of a Microsoft Office application.
6. Click the 'Change Program' button, and select one of the recommend programs. If the desired version of the Microsoft Office application is not displayed, browse to the desired version of the Microsoft Office application you wish to use to edit the file type.
7. Click 'OK' to save the changes.
Windows 98, 2000 and XP
8. Open Windows Explorer.
9. Click on the 'Tools' menu, and select 'Folder Options' and then 'File Types.'
10. Select the file extension (such as .xls) that you wish to associate with a different version of a Microsoft Office application.
11. Select 'Change,' and choose one of the recommended programs. If the desired version of the Microsoft Office application is not displayed, browse to the desired version of the Microsoft Office application you wish to use to edit the file type.
12. Click 'OK' to save the changes.