  In this paper we present a determinant quantum monte carlo study of the two
dimensional Hubbard model with random site disorder. We show that, as in the
case of bond disorder, the system undergoes a transition from an Anderson
insulating phase to a metallic phase as the onsite repulsion U is increased
beyond a critical value U_c. However, there appears to be no sharp signal of
this metal-insulator transition in the screened site energies. We observe that,
while the system remains metallic for interaction values upto twice U_c, the
conductivity is maximal in the metallic phase just beyond U_c, and decreases
for larger correlation.
