help to analisys spatio-temporal

Package "stem" claims to do exactly the kind of things you require:

http://cran.r-project.org/web/packages/Stem/

I still prefer to use gstat see e.g. 
http://cran.r-project.org/web/packages/gstat/vignettes/st.pdf

There are apparently some new discoveries in the Cressie's new book 
[http://books.google.com/books?id=-kOC6D0DiNYC] about how to fit 
space-time prediction models, but I would also advise you to look at 
[http://books.google.com/books?id=YqpZKTp-Wh0C] or some recent papers 
from Edzer and colleagues 
[http://stml.uni-muenster.de/index.php?option=com_content&view=article&id=4&Itemid=16&lang=en].

T. Hengl
http://www.wewur.wur.nl/popups/vcard.aspx?id=HENGL001

Hi.
Are there packages in R that can perform spatio-temporal analysis such
as Testing stationary and sepreability, fitting covariance
function(Sepreable and non-sepreable)
and kriging??
Please guid me.
Thanks