Dear Sir, i'm trying to install Bioconductor in R, but not able to do it directly from install bioconductor option available under Packages. It gives me error unable to resolve URL. After that i download some packages and install them manually. when i run this command :- > getBioC() it gives me result :- Running getBioC version 1.2.56.... If you encounter problems, first make sure that you are running the latest version of getBioC() which can be found at: www.bioconductor.org/getBioC.R Please direct any concerns or questions to bioconductor@stat.math.ethz.ch. Error in getBioC() : Your R can not connect to the Bioconductor website, which is required for getBioC to work properly. The most likely cause of this is the internet configuration of R Even i'm not able to update packages. when i run this command :- > install.packages2("marrayTools") it gives me result :- Note: http://www.bioconductor.org/CRANrepository does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/repository/release1.3/package does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/repository/devel/package does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/data/metaData does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/repository/Courses does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/data/cdfenvs/repos does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/data/probes/Packages does not seem to have a valid repository, skipping Note: http://www.bioconductor.org/repository/Omegahat does not seem to have a valid repository, skipping Error in update.packages2(pkgs, repEntry, lib, recurse, type, force = force, : No repositories to search Can you please tell me how to do internet configuration of R. Regards, Rashi Project Assistant IGIB, Mall Road New Delhi INDIA [[alternative HTML version deleted]]