[STATSGRASS] using R and gstat inside a C module

[G. Allegri]

I need to use R and gstat functionalities inside a module I'm writing.
To embed R in a C program libRmath should be used.
First question:
Is it possible to load gstat package from the R standalone library?
Second question:
Is there another way to do it when working inside a GRASS module? The
question raises because, with regard to spgrass6, there's no way to
use it from a module (except by making a shell process call from C)...
am I wrong?
Thanks,
Giovanni