Sion continued theoretical studies of the accretion process in cataclysmic variable and its effects on the white dwarf. He will continue his studies of the thermal response of the underlying white dwarf in a cataclysmic variable to accretional heating (see Sion 1995, ApJ, 438, 576) by the dwarf nova outburst and cooling during dwarf nova quiescence. Sion's code has just been updated with OPAL opacities and an outer boundary modification that allows for including the kinetic energy of the accreting matter and inward boundary layer irradiation.