  We study how two moduli can be stabilized in a Minkowski/de Sitter vacuum for
a wide class of string-inspired Supergravity models with an effective
Fayet-like Supersymmetry breaking. It is shown under which conditions this
mechanism can be made natural and how it can give rise to an interesting
spectrum of soft masses, with a relatively small mass difference between scalar
and gaugino masses. In absence of a constant superpotential term, the above
mechanism becomes completely natural and gives rise to a dynamical
supersymmetry breaking mechanism. Some specific type IIB and heterotic string
inspired models are considered in detail.
