  A generic lesson of string theory is that the coupling constants of an
effective low energy theory are determined by the vacuum values of a set of
fields - the so-called moduli - some of which are stabilized at relatively low
masses by non-perturbative effects. We argue that the physics of these moduli
cannot be separated from the issues of dynamical and gauge mediated
supersymmetry breaking. To illustrate this point we present a modified version
of the type IIB KKLT model where the criteria for gauge mediated SUSY breaking
may be realized.
