Here is the DosBox (an emulator of DOS) for the lazy people who don't want search and download it... :) This is very useful for DOS Gamers
Well... I'll tell something about it:
1)This is an emulator of DOS
2)It's very useful for play DOS Games, and can be used like a DOS tool
3)It include sound and graphics from old DOS
4)Very easy to use
Instructions: (If you use DOS or you know how use DOS, you don't need read this, only read how mount a directory)
Before you can use the files located on your own filesystem, you have to mount the directory containing the files.
mount c c:\dosprog\ will create a C drive with c:\dosprog as content.
*c:\dosprog is an example. Replace it with your own games directory.
When the mount has succesfully completed you can type c: to go to your freshly mounted C-drive. Typing dir there will show its contents. cd will allow you to enter a diretory (recognised by the  in a directory listing).
You can run programs/files which end with .exe, .bat and .com
If you want know more things about DosBox, type intro or help.
Enjoy It. :D