band structures in 3D



 Dear Netters,
 Can someone point me to programs available for calculating electronic band
 structures in 1-, 2-, and 3- dimensions?  I remember a few years back that a
 program known as VEH (Valence Effective Hamiltonian) was capable of doing
 this, but there may be others (or updated versions of VEH).  I would be
 interested in both semi-empirical and ab initio programs.
 Thanks ... Prof. Bill Welsh
 Dept. of Chemistry
 University of Missouri-St. Louis