  We study the possibility of detecting the charged Higgs bosons predicted in
the Minimal Supersymmetric Standard Model $(H^\pm)$, with the reactions
$e^{+}e^{-}\to \tau^-\bar \nu_{\tau}H^+, \tau^+\nu_\tau H^-$, using the
helicity formalism. We analyze the region of parameter space
$(m_{A^0}-\tan\beta)$ where $H^\pm$ could be detected in the limit when
$\tan\beta$ is large. The numerical computation is done for the energie which
is expected to be available at LEP-II ($\sqrt{s}=200$ GeV) and for a possible
Next Linear $e^{+}e^{-}$ Collider ($\sqrt{s}=500$ GeV).
