trouble with fargo

help i've just bought a cd writer so i can patch pal games so they work on my modded jap ps2. i downloaded fargo but i have no idea how to use it. is it a win or dos program. ive all ready tryed todo it with universal patcher from paradox, but with no success
please can someone help, i desparate to play pal games on my jap ps2. i will be eternallly greatful for any help