simulation tools - event scheduling routines

Greetings,

Does anyone know of a package (commercial, shareware, freeware,
whateverware) that contains event-scheduling routines for use in large
simulation code for use in BCB?  I don't want to translate FORTRAN by
hand....

Thanks,

Dr. Mike Bienvenu
Staff Scientist, SPARTA, Inc.
703-448-0210
m...@sparta.com