Using the effective Lagrangian approach we compute the dominant for tan bet
a much greater than 1 supersymmetric contributions to the leptonic decay ra
tes of B-d,s(0) mesons. We point out that in this limit the CP violating as
ymmetries measured in the decays B-d(0)((B) over bar (0)(d)) --> T-T+ can b
e interesting probes of the complex phases of the MSSM parameters and/or th
e V-td element of the CKM matrix.