Trainz: A New Era (TANE) Series KCS Dé México #4830, KCS Lines United States #4830 And Ferromex #4830 GE ES44AC on Microsoft Windows XP Professional SP3 Version 2002.
Not the Kansas City Southern one. Not sure if that changes it sorry I forgot to include that in the original comment. On the website where I downloaded it there was not a requirement.
Kansas City Southern was the first private company expanded in 1996 but before it was called Transportes Ferroviarios Mexicanos(Mexican Rail Transport) or also known as TFM, and in 2006 TFM changed his name to Kansas City Southern of Mexico