Towards determining phi(1) with B->D(*)(D)over-bar(*)

We present an isospin analysis of the decay modes B-->D (D) over bar, D*(D) over bar, D (D) over bar*, and D*(D) over bar*, which allows the determination of the final-state interaction phases. As these transitions have branching ratios of the order 10(-4) or larger, they could be useful in detecting the CP-violating phase phi(1) equivalent to arg(- V-cb*VcdVtbVtd*) in the first-round experiments of a B-meson factory. The problem of penguin pollution may still be present. Once the Kobayashi-Maskawa matrix elements are known, it is possible to obtain the magnitudes and relative phases of hadronic matrix elements for B-->D-(*)(D) over bar((*)). This will in turn lead to some information about the penguin pollution.