Wow. I would be too concerned about screwing up my DVD drive to try to hack it. Is there a risk of that when using these hacks?
I was in Berlin a while back and had the experience of renting a DVD to watch with my son. My ThinkPad did allow me to change regions - but would allow me to do it only 3 times total before locking to the last region I set. We watched the video, I re-set to North America and there it stays. Now I take a few DVD's from home. I would love to be able to use this supposedly portable international device on the road as I spend 2 1/2 - 3 month per year in Europe.
Best wishes,
Teacher49