Cheats .
These Are, as far as I know the only cheats available, as of yet they are only internal cheats, if you have any more or you find some cheat files before I do then do send them to me. Details can be found
here.Just after you've started a game, try to build a very long train tunnel you cannot afford. A message telling you can't build it will come up. Then try putting the tunnel another place. If successful, you'll get both the tunnel and the money it costs!
When a computer player is about to go bankrupt, and you're asked to buy the company, turn down the offer. Instead open the company's window and buy 75%. Don't close the window. Wait until the company is bankrupt. Then sell your 75% in the still open window. This should make you a few millions.
These are the only ones I know of .sorry!