If you want to try Free Dos, you can get it at
http://www.FreeDos.orgYou do need to set up a dos partition, seperate from your windows, or it can be run from A USB drive, or the CD,...
For more info, go to the Free Dos site,...This pretty much applys to any version of Dos you want to install,...later I will go into details, as much as I can,..for anyone interested,..or also feel free to post what you knw, or any questions, at the free dos site there is a forum, and FAQ,...also.
Guess thats about it for now,from Garry