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 below)
Return: CF clear if successful
        CF set on error
            AX = error code

Format of NetServiceControl parameter structure:
Offset  Size    Description
 00h    DWORD   -> service name
 04h    WORD    result buffer size
 06h    DWORD   -> result buffer as service_info_2 structure

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