problem with packages

Hello, I am on a laptop with Win7, running R-2.12.1
if I click on Packages/InstallPackages I get :

utils:::menuInstallPkgs()

Warning: unable to access index for repository http://cran.skazkaforyou.com/bin/windows/contrib/2.12
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.12
Error in install.packages(NULL, .libPaths()[1L], dependencies = NA, type = type) :
   no packages were specified

if I try update packages :

update.packages(ask='graphics')

Warning: unable to access index for repository http://cran.skazkaforyou.com/bin/windows/contrib/2.12
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.12

My profile.site file is :
# Things you might want to change
# options(papersize="a4")
# options(editor="notepad")
# options(pager="internal")
# set the default help type
# options(help_type="text")
# options(help_type="html")
# set a CRAN mirror
  local({r<- getOption("repos")
        r["CRAN"]<- "http://cran.skazkaforyou.com"
        options(repos=r)})
# set library paths
  aaa<- strsplit(R.home(),"R-")[[1]][1]
.libPaths(c(paste(aaa,"cran",sep=""),paste(aaa,"Others",sep="")))
#  set for 'jags' , 'WinBUGS' , 'Sweave' , 'EBImage' , 'JGR'
  aa<- strsplit(R.home(),"R")[[1]][1]
local({
  Sys.setenv("JAGS_HOME"=paste(aa,"R/JAGS-2.2.0",sep=""))
  Sys.setenv("GTK_BASEPATH"=paste(aa,"R/GTK",sep=""))
  Sys.setenv("R_HOME"=paste(aa,"R/R-2.12.1",sep=""))
  Sys.setenv("R_LIBS"=paste(aa,"R/Cran",sep=""))
  Sys.setenv("DYLD_LIBRARY_PATH"=paste(aa,"R/R-2.12.1/bin/i386",sep=""))
  PathNew<- paste(aa,"R/GTK/bin;",aa,"R/ImageMagick;",Sys.getenv("PATH"),";",aa,"PortableUSB/PortableApps/MikeTex/miktex/bin",sep="")
  Sys.setenv("DirWinBugs"=paste(aa,"PortableUSB/PortableApps/WinBUGS14",sep=""))
  Sys.setenv("PATH"=PathNew)
#
  })


Any ideas what can be wrong?
Thanks

R.Heberto Ghezzo Ph.D.
Montreal - Canada