To install MUSAC run INSTALL.EXE from the File/Run prompt in Program Manager.

If for some reason install fails follow the revovery procedue below to return the system to normal.

Recovery procedure: 
From the DOS prompt:
	cd {Windows path e.g. c:\windows}
	copy system.msc *.ini
	copy progman.msc *.ini
	del musac.ini

Restart Windows and then delete the other musac files from the musac directory.