INT 5B U - SitBack v3.02R - INSTALLATION CHECK                                  
	AX = 8485h
	DL = 70h
Return: CX = 8485h if installed
	    DX:AX -> ??? (configuration data?)
Program: SitBack is a background file backup utility by SitBack Technologies,
	  Inc. which initiates backups whenever the system is idle
SeeAlso: AX=5254h/DL=04h,AX=8485h/DL=78h