Windows 10: How to open OR convert .CCSS files?

Hi All, Recently I acquired a couple of files that I have never seen the likes of before--the extension is .CCSS. Not .CSS, but .CCSS. I need to open these for computer tasks but my computer running Win 11, 64 bit has no application that would open them and I can't find any real information on such files. Can anyone here perhaps be of aid? - Thank You

:)

 

File Converter

I had to reset my computer and I lost my file converter for 2003 which allows me to open 2010. I attempted to download the security update for Office file converter pack 2003 which is listed on your website, however it keeps saying this version of product
was not found on my system. Do you have any suggestions?

 

I need to convert Quattro pro files to windows Office 2007

http://office.microsoft.com/en-us/excel/ha010448731033.aspx

Install the Quattro Pro 5.0 converter
To install the converter for Quattro Pro versions 1.0 through 5.0 for Windows, do the following:

Click Start on the Windows taskbar, point to Settings, and then click Control Panel.
Double-click the Add/Remove Programs icon.
Click the name of the Microsoft Office 2000 or Microsoft Excel 2000 program that you have, and then click Add/Remove.
Click Add or Remove Features, and locate the Quattro Pro 5.0 Converter under Microsoft Excel for Windows.
Click Run From My Computer to install the converter to your hard disk.
Click Update Now.
Open a Quattro Pro file
To open a Quattro Pro file in Excel, follow these steps:

Click Open on the File menu.
In the Look in list, click the drive or folder that contains the file you want to open, and then locate the folder that contains the file.
In the Files of type list, click Quattro Pro 1.0/5.0 (Win) (*.wb1) if your files are from Quattro Pro for Windows versions 1.0 through 5.0, or click Quattro Pro/DOS Files (*.wq1). The former requires installation of the converter, as outlined above, before it appears in the list.
Double-click the file you want to open.
Notes

You cannot save files in the Quattro Pro 1.0/5.0 (Win) (*.wb1) format. If you open one of these files and make changes to it, you can save changes by saving as a Microsoft Excel Workbook (*.xls) or in another spreadsheet format.
You can save changes in the Quattro Pro/DOS format, but changes made using features that are unique to Excel may be lost.


or


http://office.microsoft.com/en-us/excel/HP052538431033.aspx

You can open a file created in another program, such as Lotus 1-2-3 or Quattro Pro, in Microsoft Excel the same way you would open an Excel file. You can then save the file in its original file format or as an Excel workbook using the standard Excel save commands. Files saved as Excel workbooks might not retain all of their original formatting, and features and formatting of an Excel workbook might not be available in other programs.

 

I need to convert Quattro pro files to windows Office 2007

The link says for Office 2000 and 2003. Will this work for 2007?