Okay. Now it says that I need to mount my directory or something like that. How do I do that?
For us not so tech savy guys and girls there is a Dosbox Front-End that does all this for you.
It is called D-Fend Reloaded and is fairly to use, I think.
Here's the link:
http://dfendreloaded.sourceforge.net/
I use this program since I'm on a Danish computer; Dosbox is apparently for a US computer. The keys are not placed in the same places apparently...