  We present the next-to-leading order QCD corrections to the production of a
$W$-boson in association with a jet containing a heavy quark. The calculation
is fully differential in the final state particle momenta and includes the mass
of the heavy quark. We study for the case of the Tevatron the sensitivity of
the cross section to the strange quark distribution function, the dependence of
the cross section on the heavy quark mass, the transverse momentum distribution
of the jet containing the heavy quark, and the momentum distribution of the
heavy quark in the jet.
