  I describe work done in collaboration with M. Joyce and K. Kainulainen on (1)
the strength of the electroweak phase transition in the MSSM and (2) the
mechanism for producing the baryon asymmetry during the phase transition. In
the former we compare the effective potential and dimensional reduction methods
for describing the phase transition and search the parameter space of the MSSM
for those values where it is strong enough. In the latter we give a systematic
computation of the baryon asymmetry due the CP-violating force acting on
charginos in the vicinity of the bubble wall. We find that a light right-handed
stop, a light Higgs boson, and a large phase in the mu parameter, are the main
necessary ingredients for producing the baryon asymmetry.
