Specra (formerly WinDOS) is a GUI Shell for DOS.
Making it work
It works just as it would in dos. You must change to the directory it is installed in to run it.
Aquiring a Copy
Their Site is http://www.student.unimelb.edu.au/denisa/hitech.htm If the link is dead, try this mirror: http://www.pldos.pl/windos/hitech.htm.