library error on start up, error on update packages

Hello,

I am unable to update packages.  I am running R version 2.8.1 (2008-12-22)
under VISTA.  When I start R I get the following error:

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

Error in library(package, lib.loc = lib.loc, character.only = TRUE,
logical.return = TRUE,  :
 'datasets' is not a valid package -- installed < 2.0.0?

Then, at the > when I run Update packages I get this error: Error: could not
find function "update.packages"

In R 2.8.0 I do not get either of the above errors that I get in 2.8.1, but
when I update packages in 2.8.0 I get the following warnings:

package 'lattice' successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package 'lattice'
package 'mgcv' successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package 'mgcv'
package 'nlme' successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package 'nlme'
package 'rpart' successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package 'rpart'

The downloaded packages are in
       C:\Users\Greg\AppData\Local\Temp\Rtmpyqi9OE\downloaded_packages
updating HTML package descriptions
Warning message:
In file.create(f.tg) :
 cannot create file 'C:\PROGRA~1\R\R-28~1.0/doc/html/packages.html', reason
'Permission denied'

Finally, as a side note, perhaps, I can install new packages using the
Install packages menu option under 2.8.1, but interestingly the newly
installed package does not appear under C:\Program
Files\R\R-2.8.1\Library--I have not found the location where the newly
installed package actually resides, but R is smart enough to locate it when
I load the package.

I am wondering if I have some VISTA setting or administrative rights issue?
Any help would be appreciated.

Greg Blevins


=====================
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.

Type 'q()' to quit R.

Error in library(package, lib.loc = lib.loc, character.only = TRUE,
logical.return = TRUE,  :
 'datasets' is not a valid package -- installed < 2.0.0?

update.packages(ask='graphics')

Error: could not find function "update.packages"

utils:::menuInstallPkgs()

--- Please select a CRAN mirror for use in this session ---
Error in install.packages(NULL, .libPaths()[1], dependencies = NA, type =
type) :
 no packages were specified

-- 
Gregory L. Blevins
Office 952 944-5743
Cell 612 251 0232
gregblev at gmail.com

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