uhmm do you have a forum installed on it? That would be the easiest I think Im sure there are some arcade scripts out there just never have searched or heard of one.
It mainly depends on the forums software. If its the majors (PHPBB2, vBulletin, IPB, etc..) there is a hack called ibproarcade. There is versions of it for all the majors, thats a good one, I've used it before
OH those games on the x10 arcade are the exact same games i dont know how to add to my forum does anyone have any clue for step by step dummies instructions to add it!