In the Trainzoptions file in TRS2006 you add the line; -surveyorfov=185
The numeral is editable anywhere from =55 to =185
The line numeral can be changed as many times as you want, by exiting Trainz, and going into the trainzoptions file to make changes.
Entering the line: -freeintcam into the Trainzoptiions file allows you to roam about inside and outside off the cab
Alt-U and Alt-V allow you to roam about and other stuff.