Overriding computer lock on Region (for dvds)

There was a thread ages ago about freeware on the net you could download that would overwrite your computer's locking in on a specific region...
Anyone know where it is (the thread or the site?)?

Many thanks!

The most popular shareware is http://www.dvdidle.com/dvd-region-free.htm. All the downloads have a 30 day trial, after that it's not too expensive. As far as I know (goes for my laptop drive anyway), for most drives after 2001, you could change 5 times and that's it... you need a software solution like on that link. I tried some software which was supposed to unlock the hardware after the 5 times, but didn't work on my Sony    But if someone comes up with how to do it, then I'll be happy too. If not, you have 30 days free trial to play with 

This only works for PC. Does anyone know of a similar program or hack that will work for Macs?