  A nonperturbative, purely numerical, solution of the reduced Rayleigh
equation for the scattering of p- and s-polarized light from a dielectric film
with a two-dimensional randomly rough surface deposited on a planar metallic
substrate, has been carried out. It is found that satellite peaks are present
in the angular dependence of the elements of the mean differential reflection
coefficient in addition to an enhanced backscattering peak. This result
resolves a conflict between the results of earlier approximate theoretical
studies of scattering from this system.
