  With the strong experimental evidence for standard neutrino mass and mixings,
there exists now a possibility of the lepton flavor violating process e\sup +
mu \sup - \arrow W \sup + W \sup -, which would occur via t-channel neutrino
exchange induced by neutrino mixings. We consider Langackers generalized
neutrino mixings including ordinary (canonical SU(2) \sub L x U(1) \sub Y
assignments), exotic (non-canonical SU(2) \sub L x U(1) \sub Y assignments) and
singlet neutrinos leading to light and heavy mass eigen states. Constraints on
lepton flavor violating (LFV) ordinary and heavy neutrino overlap parameters
are obtained by using the current experimental bounds on LFV process Mu \arrow
e gamma . These constraints are used to analyze the dependence of differential
cross section and angular distribution, for the process e\sup + mu \sup -
\arrow W \sup + W \sup -, on the mass of heavy (exotic) neutrino and c. m.
energy (sqrt(s)). The possibility of obtaining signatures of exotic neutrino
mixings at e - Mu collider is discussed.
