How to change my ps2 output from nstc to pal
 

I found out that there was a 50" tv not used in the garage....But it's NTSC...
I remember that there was a way to change the ps2's output from pal to ntsc by tweaking the ps2 a little
I was trying to search the forum but all the information I could find was changing the game format not the output....
Does anyone know where I can find that information??
I'm searching google and no luck yet....
Hope someone can help me
THANKS!!