final fantasy x is a DVD rom game, u need a DVD-R drive to back it up. The ps2 watermarks r like proof of an original disk i guess. won't affect the backing up of the game.
If you have a DVD-R drive, i;ve personally found that PrimoDVD is the easiest t backup dvd games
This page has some tuts on backing up games..
http://www.psxcopyworld.co.uk/
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