  We determine the optimal laser and $\ep/\em$ energies and polarizations for
{\it directly} determining the CP eigenvalue of each of the neutral Higgs
bosons of the Minimal Supersymmetric Model via measurement of transverse
polarization cross section asymmetry in back-scattered laser photon collisions.
Approximate statistical significances are computed for the measurement of the
CP eigenvalue as a function of Higgs mass and other parameters of the model.
