After you launch ProM and after the units window, you'll get the Model
Type window with a check box for FEM Mode. Select the box and proceed.
Pro/MESH will allow you to setup the model with constraints, loads,
material properties, analysis, ....etc. , create an h-element mesh,
export the whole thing and solve it in ANSYS or NASTRAN, then retrieve
and view the results in a ProM-like window/interface.
This is helpful if you don't want to deal with the GUI of the other solvers.