[R] how to in XML on windows XP for R 1.9.1

[szhan@uoguelph.ca]

Dear R experts:
I tried two ways to install Package:XML on windows xp for R 1.9.1, all failed.
Messages are given as bellows:
1> download from CRAN
> install.packages("XML", CRAN = getOption("CRAN"),
+ contriburl = contrib.url("http://cran.r-project.org"),
+ available = NULL, destdir = NULL,
+ installWithVers = FALSE)
trying URL `http://cran.r-project.org/bin/windows/contrib/1.9/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 20065 bytes
opened URL
downloaded 19Kb

Warning message:
No package "XML" on CRAN. in: download.packages(pkgs, destdir = tmpd, available
= available,

2> Download binary code XML_0.97.0.zip from http://www.omegahat.org/RSXML/
unzipt to goXML directory:
> install.packages("C:/goXML/XML")
trying URL `http://cran.r-project.org/bin/windows/contrib/1.9/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 20065 bytes
opened URL
downloaded 19Kb

Warning message:
No package "C:/goXML/XML" on CRAN. in: download.packages(pkgs, destdir = tmpd,
available = available,

Could you please help me install it sucessfully?
Thank you for your hellp!