Thanks for your response.  However, I need more guidance.

1) I searched the archives of this list back to June 1.  I found no
discussion on this subject as I examined all the subject titles for the
string [Ww]in.

2) I tried (what I understand) to be you suggestion.
I created etc/Renviron.site:
R_LIBS_SITE="C:\Program Files\R\R-2.7.2\library:C:\Program
Files\R\R-2.7.2\Packages"

3) As a test, downloading a package resulted in it being stored in:
C:\Documents and Settings\[USER]\Local
Settings\Temp\RtmpO7pcpi\downloaded_packages

4) From the documantation of Renviron:
Unix versions of R have a file 'R_HOME/etc/Renviron' which is read very
early in the start-up processing. It contains environment variables set by R
in the configure process, and is *not used on R for Windows*.

I seek your guidance, for I quickly need to deploy R and selected
contributed packages on several classroom computers.

Mike

On Wed, Sep 10, 2008 at 2:02 AM, Prof Brian Ripley <ripley@stats.ox.ac.uk>
wrote:
> On Tue, 9 Sep 2008, boxyzzy@gmail.com wrote:
>
>> As a sys admin, how do I install packages so that there is one common
>> library for all users of the MS Windows computer, instead of the
>> default individual location for each user?
>>
>> I've done this for Linux.
>
> The same way.  You set R_LIBS_SITE in etc/Renviron.site.  See
?.Library.site
>
> This was discussed on this list with the last couple of weeks, so please
do
> check the archives.
>
>> Thanks, in advance, for your help.
>>
>> Mike
>
> --
> Brian D. Ripley,                  ripley@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>

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