Robin Hoods Playground

sorry guys iv been to the j tag part but cant seem to post anything. can anyone shed some lite.on the subject (pun intended lol)
cos iv just succeeded in flashing my lite-on 74850c drive and then discoverd i need a one time boot disc thing so i found the video by good old cofree and yeah should be easy to burn and that but then when he said about J TAG WOOWW that lost me.
what the hell is J TAG?? what dos it do?? he said about either exsepting the update or dont exsept it if your plaining on doing the j tag errrrrr im lost
i now don't know weather to do the disc or not cos i don't no weather to except the update.
would someone please be so kind to explain to me what it is and what it dose and weather to or not lol
And not sure if you need to know this but i have loads of wave 2 and 3 games done!! and plan on getting loads of wave 4 to.
thanks guys yet again.

If you have played a wave 4 game, or are playing on live with your console, you cannot Jtag...

http://www.free60.org/JTAG_Hack" onclick="window.open(this.href);return false;