Hi William

If you click the round Office button at the top left, then Save As, you will
see an option to save as an Excel 97-2003 Workbook. That is an .xls file.

Note that any formatting, etc that is not compatible with Excel 97-2003 will
be lost.

Andrew Engwirda
MVP 2007-now

"William" wrote:

The computer I have must have a version of Excel which produces .xlxs files.
I have need to convert these to .xls files. Do I need to buy and install
another version of Excel or can I convert them? Thanks