Microsoft Excel 2007 with Example
3.3 Workbook:Save in 97-2003 Format
If you save your Excel files in 97-2003 format (.xls instead of the new .xlsx format), users who do not have Excel 2007 or Excel 2010 installed on their computer, can still open your Excel files.
1. Open a workbook.
2. On the green File tab, click Save As.
3. Select Excel 97-2003 Workbook from the drop-down list.
4. Click Save.
To automatically save your Excel files in 97-2003 format, execute the following steps.
5. On the green File tab, click Options, Save, and select Excel 97-2003 Workbook from the drop-down list.
6. Click OK.
Note: Excel will always give you a warning if features are not supported in 97-2003 format, so you can save the file in the new .xlsx format (Excel Workbook).