To install this utility first unzip the main file in a folder.  It contains another file called DiskUtil.Zip.  This is the main file which contains the program files.  This must be unzipped to the folder.  The DiskUtil.EXE is the main application which must be run.
List:
DiskUtil.EXE
Disk32.DLL
Disk16.DLL
Disk.Vxd
All the above files must be present in order to execute the program.
