1)   Virtual Drive Creator 2.1.3
Create Virtual Drives from long paths, it's easy! Type or browse to the full path, choose a drive letter and Click [Add Virtual Drive]. Make CD-ROMs obsolete, copy the contents of the CD-ROM to your Hard Drive and run the CD from there.
subst, virtual drive, virtual CD, CD emulator, virtual CD-ROM,

 2)   SubstDrive 1.2
API for work with substitution device (see DOS command "subst"). Win9x ONLY. For WinNT and Win2000 use native API call.
API, subst, device, substitution,

 3)   Visual Subst 1.0.5
Visual Subst is a small enhancement utility which allows you to associate the most accessed directories with virtual drives. It uses an API similar to the console 'subst' utility, but makes it easier to create and remove virtual drives in a GUI way.
subst, virtual drive, directory, long path,