INT 21 u - LAN Manager Enhanced DOS - LOCAL NetMessageBufferSend                
	AX = 5F40h
	DS:DX -> NetMessageBufferSend parameter structure (see #01706)
Return: AX = error code


Format of LAN Manager NetMessageBufferSend parameter structure:
Offset	Size	Description	(Table 01706)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> recipient name (name for specific user, name* for domain
		      wide name, * for broadcast)
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> buffer
 08h	WORD	length of buffer