INT 21 u - LAN Manager Enhanced DOS - LOCAL NetServiceControl                   
	AX = 5F42h
	DH = opcode
	    00h interrogate status
	    01h pause
	    02h continue
	    03h uninstall
	DL = argument
	    01h disk resource
	    02h print resource
	    04h communications resource (not implemented for DOS)
	ES:BX -> NetServiceControl parameter structure (see #01712)
Return: CF clear if successful
	CF set on error
	    AX = error code


Format of LAN Manager NetServiceControl parameter structure:
Offset	Size	Description	(Table 01712)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> service name
 04h	WORD	result buffer size
 06h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> result buffer as service_info_2 structure