Well, there are 2 discs, the first being an NA game that you use to swap, and the second is PPP. If you mean the first, you go into browser before you insert the game, put it in when you're in the browser screen and it will start to spin. While that disc is spinning, take it out and the thing in the center will still be spinning. Put the PPP disc in while the thing in the center is still spinning and close the swap lid. The PPP disc will still be spinning and you now select the game from the browser screen. (press X on the PS2 disc icon) and it should *hopefully* boot up.
Also, I doubt you'd be up to this, but if you'd like, you can send the disc to me, and I can attempt to get it working in my PS2, and I can make a backup for you as well and attempt booting that. (If you need any reassurance, I have a high marketplace score on the forum, feedback page here:
http://www.bemanistyle.com/forum/itrader.php?u=7580) This is only if you want of course, I'd be happy to do it for free, only asking you cover the cost of postage.