  Massive neutrinos are a generic prediction of SO(10), and models of
unification cry for supersymmetry. Since we have a rather detailed information
on neutrino and charged fermion masses, the real question is: how/whether it is
possible to build a SO(10) supersymmetric model, that correctly incorporates
fermion masses. We show that a simple construction is possible in the context
of a minimal theory. We concentrate on the two heaviest generations, discuss
the predictions of the model, and briefly comment on open questions.
