  Charged Higgs boson production in association with a top quark could be the
first indication of the existence of Higgs particles. The Tevatron Run-II
started data-taking in April 2001 at a centre-of-mass energy of 1960 GeV and
could probe the existence of a charged Higgs boson beyond the current mass
limit. We study the ppbar -> tbH^+/- production process with Monte Carlo
simulations in HERWIG and PYTHIA, comparing expected cross sections and basic
selection variables.
