Int 6F Fn 9504  - 10net V5.0 - Enumerate Users Of Shared Device            [N]

   AX = 9504h
   BX = zero-based shared device index
   CX = zero-based user index
   DS:SI -> server's node ID

Return: CF clear if successful
       ES:DI -> node ID of the CX'th user of the BX'th device
   CF set on error
       AX = status (see #3411)

See Also: AX=9501h,AX=9502h,AX=9503h