Thanks for the help. I also tried copying the entire Trainz folder from my old PC, and simply copied it to a separate drive on my new PC. It works OK, although I had to re-adjust the graphics settings to conform to the new PC specs and digital monitor. I'm assuming that the reason this method worked is because the Trainz program had been previously installed on a different drive in the new PC and was in the Windows Registry. Can anyone confirm this? If this is the case, can I now delete the original installed version on the new PC?