You guys not only pointed me in the right direction, but I was able to figure out what the problem was. Turns out he was coupling this with PrintFil but PrintFil wasn't set to launch on boot. Thank you all!

Hello, I apologize if I'm in the wrong area to ask this but I'm at whit's end... I have a client that uses DOSBox... and to make a long, filled-with-gaps-story short, he uses it to calculate "beam sizes" (his words). He was recently setup on a new PC and the DOS config files and everything else were …