I've had a few requests for updates to the limma package from people who are still using R 1.9.1 or earlier. Naturally it would be best to update to R 2.0.1 but, for those who need it, I've put a slightly modified version of limma 1.8.13 built for R 1.9.1 for Windows at http://bioinf.wehi.edu.au/limma/r1091/limma_1.8.13.zip. You need to download this file to your local disk, then use "install package(s) from local zip file ..." A tar.gz file is at http://bioinf.wehi.edu.au/limma/1091/limma_1.8.13.tar.gz Gordon