  We describe the structure of the irreducible representations of crossed
products of unital C*-algebras by actions of finite groups in terms of
irreducible representations of the C*-algebras on which the groups act. We then
apply this description to derive a characterization of irreducible
representations of crossed-products by finite cyclic groups in terms of
representations of the C*-algebra and its fixed point subalgebra. These results
are applied to crossed-products by the permutation group on three elements and
illustrated by various examples.
