  By using finite temperature molecular dynamics simulations, we consider the
question of the existence of dynamical ordering as a two dimensional vortex
lattice is driven through a random background potential. The shape of the
current-voltage(I-V) characteristics are qualitatively the same as those seen
in experiments on the conventional superconductors 2H-NbSe_{2} and
Mo_{77}Ge_{23}. However, in contrast to previous simulations, we find that the
lattice has no topological or translational order for any value of the driving
but that it does exhibit a high driving phase where long range orientational
order exists.
