The script itself is a standalone. I was planing not to give screenshots since it doesn't change the appearance of the hack.
It does work, but the battle system ultimately is still pretty buggy. At the same time, this hack doesn't make it more or less buggy
My demo is:
http://www.vggmn.com/rpg. And whoops, need to post a template change

That way, people can't use the register.php in the battle system, but need to use the forum's registration.