hi guys i have downloaded Transport tycoon and i also have DOSbox to get it working. however im struggling to do so. i have unzipped the zip file that was downloaded. i have then tried using the command

mount d d:\ it then comes up saying local directory D:\ added

once this happens i cannot do anything as i watched in a video

i have also tried writing files to a disc and using the following

mount d D:\ then mounting the directory of the CDrom using mount e e:\ which it then adds that directory then what do i do as in the video i watched doing this made it so he could type in install.exe and it opened the installer however when i do so it tells me its a illegal command. what am i doing wrong