INT 21 u - LAN Manager Enhanced DOS - NetHandleGetInfo                          
	AX = 5F3Ch
	BX = handle
	CX = length of handle_info_1 structure
	DS:DX -> handle_info_1 structure (see #01705)
	SI = level of information (must be 0001h)
Return: CF clear if successful
	    CX = total bytes available
	CF set if error
	    AX = error code
SeeAlso: AX=5F3Bh