Need To Unlock My Sony BDP-S500 To Play Imported DVDS And BLU-RAY

I don't think that it is illegal to change the region of a DVD player as a DVD drive in a computer can be changed easily up to 5 times before they are locked on one region. Sony Blu-Ray players at this point don't have a hack code and they have to have a hardware mod to play both region A and B Blu-Ray discs. There are inexpensive Phillips DVD players that are region free or they have an easy method to make them region unlocked. I don't know of any Blu-Ray players that have that feature, but you can get a N. American region coded player that will play both PAL and NTSC, but you will have to use a voltage converter as N America is 120V 60Hz and Europe is 220-240 @ 50hz.
The other option is to get a Blu-Ray/DVD RW drive for your computer and set it as a region 1drive and connect it to the TV for playing US discs.
There are other things you can do but those ARE illegal or questionable and I can't post them here.

Best of luck

It is illegal to change the zone on a DVD or Blu-Ray player. You should invest in what is called a Multizone Blu-Ray Player - it will play any disc from any region. That is the only legal answer I can offer. YouTube does, hoewever, feature hacks on unlocking the region code - but it is still illegal.

-Tha Mp3 Doctor