WinExec: 

Do you find yourself shutting down Windows to run certain 
DOS applications? WinExec was designed for just that 
purpose. WinExec when setup will close Windows run your DOS 
application and once you are finished, bring Windows back. 
To set it up you must first write a small batch file 
containing the DOS commands you use to run your program. For
example, let's say we are going to run DOOM. You would use 
a text editor to make the following file named DOOM.BAT

@ECHO OFF
C:
CD \DOOM
DOOM

Next, open File Manager and drag WINEXEC.EXE into the 
group that you want your DOS application to reside, Doom 
for example could go in Games. Finally open Program Manager 
properties for the icon that you just added and change the 
description to match your DOS application, in our example 
Doom, and add the full path/filename to the command line box:

C:\UTILPACK\WINEXEC.EXE C:\DOOM\DOOM.BAT

That's it! Now just click on the icon and Windows will exit, 
Doom will run, and when you are done you'll be back! Just 
repeat the steps and you could use it for many different DOS 
applications.

SHAREWARE NOTE: A timed reminder screen will be shown 
every time the program is used.