AutoIT and a couple of mapkeys.
AutoIT takes care of the sequencing and the mapkeys provide the reliable control of the software.
Previously I've done Excel VBA -> Trail file generation, but it's a slog because the operation is entirely blind.
AutoIT has functions that make this a lot easier, such as acting on feedback from Pro/E or Creo.
If you wanted extreme, I'm pretty sure AutoIT could do the work and send copies of outputs via e-mail when it's done. Up to the programmer to write it, but AutoIT was developed by people who were smart enough to write it and lazy enough to want it.
