[R] Runing S-plus add-on in R (Binary and Smoothed Binary Regression Quantiles)

[Joao Pedro W. de Azevedo]

Hello,
I would like to know if it is possible to run a s-plus package in R. I'm
particularly interested on 
The add-on written by Walter Belluzzo and Gregory Kordas to estimate Binary
and Smoothed Binary Regression Quantiles using the Simulated Annealing
algorithm. 
Many thanks,
Joao Pedro