How to play US PS2 games?!?

[Civic2000]

Hi, I recently purchased a modded PS2 from Hong Kong. It's a model [NTSC/J]SCPH-30000. I use DVD RegionX to boot my PS2 backups without any problems. I however don't know what chip is inside my PS2. I really wanted to play Final Fantasy X which is an original. However I tried everything and nothing can play it. I wouldn't mind having it modified again so I can play this game. I appreciate any posts and comments.

Also: What's this Messiah chip I heard about?