Hi Patricia,
I think this thread
https://softrak.com/ubbthreads/ubbthreads.php/topics/27959/Re_Exporting_to_CSV_through_Co might help you. Andrew's second post in the thread talks about the settings that can be used in the INI file for the SSI2XL to export it in CSV format. Although he is answering how to do without Excel, you can set the program that opens the CSV to Excel.
Email me if you want the INI file I used to do it.
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Dan Desautels
DezTek Solutions Inc.
Thunder Bay, ON