  Electroweak baryogenesis is an interesting theoretical scenario, which
demands physics beyond the Standard Model at energy scales of the order of the
weak boson masses. It has been recently emphasized that, in the presence of
light stops, the electroweak phase transition can be strongly first order,
opening the window for electroweak baryogenesis in the MSSM. For the
realization of this scenario, the Higgs boson must be light, at the reach of
the LEP2 collider. In this article, we compute the baryon asymmetry assuming
the presence of non-trivial CP violating phases in the parameters associated
with the left-right stop mixing term and the Higgsino mass $\mu$. We conclude
that a phase $|\sin \phi_{\mu}| > 0.01$ and Higgsino and gaugino mass
parameters $|\mu| \simeq M_2$, and of the order of the electroweak scale, are
necessary in order to generate the observed baryon asymmetry.
