Why can't I install the XML package

Question

Am I making some basic error here?

install.packages("XML")
Warning in install.packages :
  package ‘XML’ is not available (for R version 2.13.0)
Installing package(s) into ‘C:/Program Files/R/R-2.13.0/library’
(as ‘lib’ is unspecified)
Warning in install.packages :
  package ‘XML’ is not available (for R version 2.13.0)

Answer 1

It is probably because www.omegahat.org doesn't exist anymore. So,

command install.packages("XML", repos = "http://www.omegahat.org/R") does not work. Instead use below:

install.packages("XML", repos = "http://www.omegahat.net/R")