  We study different models of dark matter distribution for the halo of our
galaxy. In particular, we consider Eddington and King-Michie models, which
[C[C, which include anisotropy in the velocity space, and compute in a
self-consistent way the amount of dark matter present in the halo. Assuming
that the dark matter is in form of MACHOs, we find for each model the expected
number of microlensing events and their average time duration for an experiment
monitoring stars in the LMC. The main effect of including anisotropy is to
reduce the microlensing rate by about 30% and to increase, but only slightly,
the mean event duration as compared to the standard halo model. Consideration
of different luminous models for the visible part of the galaxy also induce
variations in the microlensing results by roughly the same amount as mentioned
above. The main uncertainty, in order to be able to discriminate between
different dark matter distributions and to estimate the fraction of it in form
of MACHOs is due to the poor knowledge of the rotation velocity at large
galactocentric distances.
