ABSTRACT: Accretion disks around massive black holes will themselves become massive. The alpha -viscosity can no longer be valid in the case where accretion disk mass is comparable to the mass of the accretor, as shown by Duschl et al. (1998). Using a modified viscosity prescription, one that takes into consideration the massive disk, leads to noticeably different disk structure. We present preliminary results of black holes with masses ranging from 106 Mo to 1010 Mo and mass accretion rates ranging from 10-9 Mo/a to 101 Mo/a.