  We discuss production and decays of stops, sbottoms, tau-sneutrinos, and
staus in e+e- annihilation in the energy range \sqrt{s} = 0.5-1 TeV. We present
numerical predictions within the Minimal Supersymmetric Standard Model for
cross sections and decay rates, including one-loop radiative corrections as
well as initial state radiation. We also study the importance of beam
polarization for the determination of the underlying SUSY parameters. Moreover,
we make a comparison of the potential to study squarks and sleptons of the 3rd
generation between Tevatron, LHC, and Linear Collider.
