  We present results of computer simulations at low temperature of a
two-dimensional system of dipolar bosons, with dipole moments aligned at an
arbitrary angle with respect to the direction perpendicular to the plane. The
phase diagram includes a homogeneous superfluid phase, as well as triangular
and striped crystalline phases, as the particle density and the tilt angle are
varied. In the striped solid, no phase coherence among stripes and consequently
no ``supersolid" phase is found, in disagreement with recent theoretical
predictions.
