  We determine the Tevatron's reach in supersymmetric parameter space in
trilepton, like-sign dilepton, and dilepton plus tau-jet channels, taking all
relevant backgrounds into account. We show results for the minimal supergravity
model. With a standard set of cuts we find that the previously unaccounted for
$W\gamma^\ast$ background is larger than all other backgrounds combined. We
include cuts on the dilepton invariant mass and the $W$-boson transverse mass
to reduce the $W\gamma^\ast$ background to a reasonable level. We optimize cuts
at each point in supersymmetry parameter space in order to maximize
signal-to-noise.
