just put the applications you want in a folder called something like "DOS APPS" and add this lines in the dosbox.conf file
[autoexec]
# Lines in this section will be run at startup.
mount c "\cf card\DOS APPS"
c:
that should add the folder DOS APPS as the C: drive, you can add as many folders/drivers as you want...
oh, I'm using the DOSBOX found
here (n0p's 0.63). Have no clue if it works with yours...