is the game on the CD or copied into a folder on your drive?
first at DOSBox's command prompt "Z:>" you need to "mount" the folder you want it to use as your C:\ drive (or CDROM drive)
so a way you could go about it is make a folder named "DOSBox" directly in C:\
so C:\DOSBox
in there put folder(s) for your game(s)
so C:\DOSBox\dukenukem3d
now at DOSBox's command prompt mount that folder as "C:"
so...
Z:>mount C "C:\DOSBox"
then you will get a C:\> prompt (but it will use C:\DOSbox as your C:\ drive in that example)
another example:
I use Linux and in it the Home directory is written as "~/"
I put my DOSBox folder in my Home directory
~/DOSBox
to mount it at DOSBox's command prompt it's:
Z:>mount C "~/DOSBox"
so that directory is then considered by DOSBox as the C: drive
I get the command prompt
C:>
I can then change directories to my games folder ( ~/DOSBox/games )
cd ./games
so it then says:
C:\games>
then I cd into the folder of the game I want
C:\games>cd ./TIM
and then I can start the game:
C:\games\TIM>TIM
mounting a CDROM is kind of the same but a little different
see the FAQs: http://dosbox.sourceforge.net/wiki/index.php?page=FAQ
NOTE: you can create a config file and in it you can specify to mount a specific drive automatically
the lower part of my config file is like this:
[autoexec]
# Lines in this section will be run at startup.
@echo off
pause
echo Mounting "~/DOSBox" as harddisk drive C.
mount C "~/DOSBox"
C:
echo changing directory to "./games"
cd ./games
that automatically mounts the my DOSBox directory as C: and changes dirctories to my "games" folder. (You can also set DOSBox to automatically open in fullscreen mode. There should be a example config file for you to go by.)
To set a config file you use the config command:
config -writeconf path-to-config-file
see the wiki for more info:
http://dosbox.sourceforge.net/wiki/index.php?page=DOSBoxWiki
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