Shoutbox

OK guys, I've finally set up the site, to add a json output, using php.
I'm a bit unclear as to how to do it on the msgpus side however.
Do I just download the page as a variable using XMLHTTP or is there another step in it, and then how do I eval() it?

I'm trying to test with http://arkanes-arkade.co.uk/x360/json.php?id=Sonic%20the%20hedgehog because I know sonic changes with the case.  Everything I've read seems to want something such as JSON[0] to define the info.  Would that make this gameid[0], where gameid is either SONIC THE HEDGEHOG or Sonic The Hedgehog?

Sorry to keep bothering.  I am trying to learn, I promise.