INT 2F U - Helix Multimedia Cloaking - CACHECLK - INSTALLATION CHECK            
	AX = 5758h
	BX = 4858h ('HX')
	DX = 4443h ('DC')
	CX <> 5758h
Return: BX = 6878h if installed
	DX = 6463h if installed
	   CX = version (CH=major,CL=minor)
Program: CACHECLK is a 'Cloaked' disk cache by Helix Software
Note:	returns with registers unchanged if CX=5758h on entry
SeeAlso: INT 16/AX=5758h/BX=4858h,INT 2F/AX=4310h"Cloaking"