thanks, everyone.  I was a bit confused.

I now think that the "car" error was because the package on the cran website
itself was built under 2.9.2, not because I had an old version lying around,
which my package continued to use instead of a newer version that I would
just have installed.

I was also ambiguous about asking about version.  Sorry.  I did not mean
version number of R, but the bit version.  the answer is that the two
methods are sessionInfo() and bit64= ifelse(.Machine$sizeof.point == 8, T,
F) .  It would be nice if the standard R startup message would state whether
the version is 64bit or 32bit, but this is just a suggestion.

now, all I need is a more recent packaged R version than 2.9.0.  can I ask
who maintains http://r.research.att.com/ , so I send a short email to this
person?

regards,

/iaw

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