Hi Kennilworth,Hi WestSideRailways
I believe that you may be thinking of SCS2013 by "Thakalane" which was a great external program for use with TRS2012. I still have it installed on my computer and use it with TRS2012 from time to time just to keep my hand in. There was an earlier version called SCS2006 which was on the DLS. Unfortunately the constant changes to the more recent versions have broken it.
It was a great program and I was able to create very realistic sessions with it. Its strong point was a very good selection of variables which were really useful for automating sessions. Even now 12 years on many of its commands have still to be replicated in current driver commands.
Yes, that was the chap.... was way a head of Auran and still is.....
Is he still around.... have just started getting back into Trainz.