Hello,

I m trying to install R packages via CRAN mirror sites..But i am getting Following error

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

Loading required package: utils
Loading required package: stats
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository http://ftp.ctex.org/mirrors/CRAN/src/contrib
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/src/contrib
Warning: unable to access index for repository http://ftp.ctex.org/mirrors/CRAN/bin/windows/contrib/2.15
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.15
Warning messages:
1: In open.connection(con, "r") : unable to resolve 'cran.r-project.org'
2: packages ‘samr’, ‘GSA’, ‘matrixStats’ are not available (for R version 2.15.2) 
Error in file(filename, "r", encoding = encoding) : 
  cannot open the connection
In addition: Warning message:
In file(filename, "r", encoding = encoding) :
  unable to resolve 'www.bioconductor.org'

Can any body help how to solve this

Thanks, Nitin