Robust Poisson regression

Hola!

Anybody knows if there exists somewhere in R some implementation of 
robust Poisson regression,
where robust is taken in the sense as usen in rlm(MASS). I found 
something in the package
wle, but only for the Poisson distribution, not for regression.

For the moment I try to use linear models with the square-root 
transformation,
and rlm.

Kjetil

Kjetil Halvorsen.

Peace is the most effective weapon of mass construction.
               --  Mahdi Elmandjra