Based on the feedback received, I did the following:

a) moved my lib sub-directory from the existing installed R version to
c:\myRLib
b) installed the updated R version
c) created .Renviron file in the home directory (C:\R-2.5.1) with the line
R_LIBS=c:/myRLib
d) used .libPaths() command to confirm that the new R installation was
recognizing the myRLib sub-directory
e) deleted my old R installation

Things worked fine.

Thanks you.



---------- Forwarded message ----------
From: Raghu Naik <naik.raghu@gmail.com>
Date: Jun 2, 2007 5:13 PM
Subject: Updating R version
To: r-help@stat.math.ethz.ch

A quick question.  I am trying to understand how I could move the installed
packages in my R 2.3 version to the newly installed R 2.5 version, without
having to install all the packages again. I copied the files under the old
library subdirectory to the new library subdirectory. But still the newer
version is not recognizing the packages that were copied over.

Thanks.

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