problem with a library "BEH_INT" in vhdl compiling using modelsim.(image processing)

vcom -work work -87 -explicit C:/Modeltech_5.7f/examples/vlsi.vhd
Model Technology ModelSim SE vcom 5.7f Compiler 2003.09 Sep 15 2003
-- Loading package standard
-- Loading package std_logic_1164
** Error: (vcom-19) Failed to access library 'beh_int' at "beh_int".
No such file or directory. (errno = ENOENT)
** Error: C:/Modeltech_5.7f/examples/vlsi.vhd(3): Library beh_int not found.
** Error: C:/Modeltech_5.7f/examples/vlsi.vhd(4): Unknown identifier: beh_int
** Error: C:/Modeltech_5.7f/examples/vlsi.vhd(5): VHDL Compiler exiting

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Code:
 library IEEE;
use IEEE.STD_LOGIC_1164.all;
library BEH_INT;
use BEH_INT.IMAGE_PROCESSING.all;
entity EDGE_DETECTOR is
generic( NUM_ROWS: NATURAL; 
NUM_COLS: NATURAL); 
Port (  CLOCK : in STD_LOGIC; 
EDGE_START : in STD_LOGIC; 
INPUT : in STD_LOGIC;
OUTPUT : inout STD_LOGIC ); 
end EDGE_DETECTOR;
architecture BEHAVIORAL of EDGE_DETECTOR is
type MEMORY_ARRAY is array(1 to 3, 1 to NUM_COLS) of PIXEL