Don't know if these sites will help, they are from an oldish MSE which are usually o.k
DVD unlocking is easy, you generally just need to find the multi-region code/hack and tap it into your remote control.
Step 1. Find your DVD unlocking code.
Audio/Video help site
http://www.videohelp.com/dvdhacks has a searchable list of more than 5000 DVD player unlocking hacks, and it's the first place you should check. You simply enter the make and model number of your box, and it'll tell you whether any codes have been submitted for it. If they have, it's a simple matter of following the on-screen instructions, and voila, you're in region-free heaven.
If you can't find it on Videohelp, other similar sites are DVDHacks, AVForums & DVD365.
Step 2. Double-check for negative comments.
Look for comments about your player on these sites, as people tend to report back with their personal experiences and may highlight any potential difficulties. If your player isn't listed, or it's listed as 'never' unlocked, it's still worth running a quick Google search on the make/model plus the word 'hack' or 'unlocking' to see if anything useful comes up. If you're still unsure about the process, try asking the kindly folks on the Techie Stuff board, who are usually more than happy to help.