INT 67 U - NETROOM??? - ???                                                     
	AX = 5857h
	BX = function??? (0057h,0059h,0159h seen)
	???
Return: ???
Note:	BX=0059h appears to be analogous to AX=5800h and BX=0159h appears to
	  be analogous to AX=5801h; BX=0057h appears to indicate whether
	  AX=580xh or AX=5857h/BX=0x59h should be used
SeeAlso: AX=5BF0h