Well, let me tell you something, i have integrated somechess, and it was working properly but my members didnt like it due to some reasons, some of them was that its not java or like flash "no interactivity"! you just wait for the refresh of the page, that sucks big time..
another thing its not supporiting usebility, the interface is just too complicated.
i wonder if there's any java live interactivity chess that supports multiplayer gaming and vbulletin integration << well atleast the 1st one... that would be awsome!.