G'day gsd4me,

To the best of my knowledge, Spreadsheet::Read is only for reading. I see nothing in the documentation to indicate otherwise. The module author is a frequent visitor to the Monastery (as Tux): he may have a better answer.

Searching CPAN for "spreadsheet write" (http://search.cpan.org/search?query=spreadsheet+write&mode=all) produces many results. Have a look through those to find one which best suits your requirements. One thing to note when you're doing this: some are for the *.xls format and some are for *.xlsx.