  In part I and II of this series of papers all elements have been introduced
to extend, to two loops, the set of renormalization procedures which are needed
in describing the properties of a spontaneously broken gauge theory. In this
paper, the final step is undertaken and finite renormalization is discussed.
Two-loop renormalization equations are introduced and their solutions discussed
within the context of the minimal standard model of fundamental interactions.
These equations relate renormalized Lagrangian parameters (couplings and
masses) to some input parameter set containing physical (pseudo-)observables.
Complex poles for unstable gauge and Higgs bosons are used and a consistent
setup is constructed for extending the predictivity of the theory from the Lep1
Z-boson scale (or the Lep2 WW scale) to regions of interest for LHC and ILC
physics.
