We analyze the prospects for discovering and unraveling the nature of
doubly charged bileptons at a linear collider of the next generation r
unning in its e(-)e(-) mode. We stress the importance of initial state
radiation, beam spread and polarization, and compute the discovery bo
unds. The gauge nature of vector bileptons can be determined by studyi
ng hard photon emission. (C) 1997 Elsevier Science B.V.