Thank you all very much for the pointers and (especially) the examples. I promise to reexamine my CPAN search procedures in light of them.

Should've specified: I and my audience have Excel installed, on Windows boxes. However, the data originates on a Unix system. Given that something, either raw data or spreadsheet, has to cross that interface, I'm leaning toward a Win32::OLE approach, running perl on the Windows side. From a quick read of the docs, that module will have a larger learning curve than Spreadsheet::WriteExcel, but will more flexible in the long run.

Wish me luck and, again, thanks!

--Dinosaur