  String compactification with fluxes yields MSSM soft SUSY breaking terms that
receive comparable contributions from modulus and anomaly mediation whose
relative strength is governed by a phenomenological parameter $\alpha$. Gaugino
and first/second generation (and sometimes also Higgs and third generation)
scalar mass parameters unify at a mirage unification scale $Q \not= M_{\rm
GUT}$, determined by the value of $\alpha$. The ratio of scalar to gaugino
masses at this mirage unification scale depends directly on the scalar field
modular weights, which are fixed in turn by the brane or brane intersections on
which the MSSM fields are localized. We outline a program of measurements which
can in principle be made at the CERN LHC and the International Linear $e^+e^-$
collider (ILC) which can lead to a determination of the modular weights.
