Since your target is a spreadsheet on Windows, consider writing directly to the spreadsheet. Use either the package xlsReadWrite or the RExcel interface which allows you to embed R functions inside Excel cells. Look at the main RExcel/rcom site http://sunsite.univie.ac.at/rcom/ and consider joining the mailing list there.
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
