OK, I will do. My old games (FIFA 2004) still go on and work perfectly with the new NA settings, but the Hardware Online Arena which comes with the new Network Access Disc doesn't want to play ball unless the chip is disabled. I'll make a backup and retry.
I suspect it may be the disc, as it crashes when you try and test the NA settings, and it did arrive very dirty from Sony
So, I'll make a backup and let you guys know...
LUFCfan