First results with a new method for calculating 2-loop box-functions

We describe a first attempt to calculate scalar 2-loop hox-functions with a rbitrary internal masses, applying a novel method proposed in [1]. Four of the eight integrals are accessible to integration by means of the residue t heorem, leaving a rational function in the remaining variables. The result oi the procedure is a three- or sometimes two-dimensional integral represen tation over a finite volume that can le further evaluated using numerical m ethods.