Hey everyone. I have been developing an online MUD(Multi user dungeon) and I want to create a battle arena for users to fight each other in player vs player battles. I know this is possible with PHP and AJAX, however I do not really know where to start. I am very experienced with PHP any MySQL(what the site is currently programmed in) but AJAX is new to me. What I would like to have is some sort of table system, like online poker, where people can "sit in" and battle each other in a turn based system. When the winner kills the other user, the winning user would have a certain amount of money earned or experience points, etc. I was wondering if anyone could help me figure out how to proceed. Thanks!