The latest beta version of the general purpose pre-processor <a href="ftp://gid.cimne.upc.es/pub/gid_adds/Windows/" target=blank> GID</a>. Now it is possible to prepare data with GID and then analyze them by ATENA. ATENA-GID interface contains support for construction process as well as discrete reinforcement. Discrete reinforcement can be defined totally independently in GID as truss elements, which are then imbedded in ATENA into the solid model.