INT 21 u - LAN Manager Enhanced DOS - NetUseGetInfo
        AX = 5F49h
        DS:DX -> NetUseGetInfo parameter structure
Return: CF clear on success
            DX = total available
        CF set on error
            AX = error code
SeeAlso: AX=5F44h,AX=5F47h

Format of NetUseGetInfo parameter structure:
Offset  Size    Description
 00h    DWORD   pointer to either the local device name or UNC remote name
 04h    WORD    level of information (0000h or 0001h)
 06h    DWORD   pointer to buffer of use_info_0 or use_info_1 structures
 0Ah    WORD    length of buffer

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