where i can download .imagediff for psx???

guys help me..

http://forum.redump.org/viewtopic.php?id=1593

Plextor: PX-755SA, PX-130A; LG: GDR-8164B, GGC-H20N; Lite-On: LH-20A1P; NEC: ND-2510A; Pioneer: BDC-TD03; Sony Optiarc: BC-5500S