  Decays of the type B-->D(*)anti-D(*) can be used to provide a measurement of
the parameter sin2beta of the Unitarity Triangle that is complementary to that
derived from the mode \bpsiks. Here we report a measurement of the branching
fraction and a study of the CP parity content for the decay B^0 -->
D^{*+}D^{*-} with the BABAR detector. With data corresponding to an integrated
luminosity of 20.7 fb^{-1} collected at the Upsilon(4S) resonance during
1999-2000, we determine the branching fraction to be
BF(B^0-->D^{*+}D^{*-})=(8.0 +/- 1.6 (stat) +/- 1.2 (syst)) x 10^{-4}. The
measured fraction of the component with odd CP parity is 0.22 +/- 0.18(stat)
+/- 0.03(syst). Observation of a significant number of candidates in the decay
modes B^0-->D^{*+}D^- and B^+ --> D^{*+}D^{*0} is reported. All results
presented in this note are preliminary.
