Thanks ronoh55 that worked! you the man. So i was able to play my game gtf (good to firm) in the dosbox emulator. But i am still stuck how to launch it from ES. I have followed the instructions

run the following commands.

cd ~/RetroPie/roms/pc
sudo nano gtf.sh

Copy and paste the code below.

/opt/retropie/emulators/dosbox/bin/dosbox -c “mount c /home/pi/RetroPie/roms/pc” -c “c:” -c “cd gtf” -c “GTF.EXE” -c “exit”

Save and exit. Next make the gtf.sh executable so it can be launched from emulationstation.

sudo chmod +x wolf3d.sh

when i type this last line ^ and press enter is it suppose to say anything? mine just goes to the next line ready to type command again.

so the GTF folder now shows up in my IBM folder but when i try ;aunch i get an error that is the usual oe when roms dont work. im so close :) at least i can play it but pain in the but having to mount everytime. This would be so awesome if I could get launching from ES.
Thanks for any help