We have found one software suitable in our database for this conversion.
Excel Workspace files (.xlw) are just some kind of settings, not a spreadsheet thus cannot be saved or converted to XLS format. However, some older versions of Excel used XLW extension also for workbooks.
For these files it may be possible to converted the data to another spreadsheet format, but for modern Excel files xlw to xls conversion is not possible.
XLW
Files with xlw file extension generally contain saved workspace for Microsoft Excel programs. These are used by user to save the position to GUI elements and layouts of the screen, so they can use the same settings on different computers.
XLS
Files with xls extension are best known as spreadsheets from Microsoft Excel. A spreadsheet is basically a grid of cells sorted in rows and columns. Each cell can contain text, numeric or formula data. Excel XLS spreadsheets can be opened in most other similar programs, such as OpenOffice.org Calc.