Yes, I understand what you meant.
Don't take this bad, but you clearely don't know how dosbox works, neither how to get games to work in it.
Take a good look@
http://www.abandonia.com/vbullet/showthread.php?t=14406
It will be helpfull.
Try at least to follow the guidelines.
Once you get the hang of it, it's a piece of cake, really.
Your
c:\return~1 for starters, shorten the foldername to less then 8 chars, no spaces or fancy stuff. (make it \rotp\ or something, whatever .....)