[R] ?glmm with correlation structure?

[Hank Stevens]

Hi folks,
I am looking for the package that will allow me to do a generalized 
(poisson) linear mixed model with spatial correlation structure. If 
gls() in nlme does this, I don't understand how to implement different 
families. If glmmPQL() in MASS does this, I don't understand what 
correlation models it accepts. It does not appear to accept the same 
models as gls(), but I may be doing something wrong.
Is there a mixed model package or function I am overlooking?
Thanks,
Hank

Martin Henry H. Stevens
338 Pearson Hall
Department of Botany
Ecology Graduate Program
Miami University
Oxford, OH 45056 USA
tel: 513-529-4206
fax: 513-529-4243
http://www.cas.muohio.edu/botany/bot/henry.html
http://www.units.muohio.edu/ecology/
http://www.cas.muohio.edu/botany/