I want to make a patch to the game to make the charm spells and "animal empathy" work like they did in Baldur's Gate and IWD1. Or at least guarantee that the charmed animal will attack my enemies. I think it should be as simple as copying and exchanging the bcs files, but I have no clue which script is the right one. I realize that this is a bit off-topic for this forum, but I can't seem to find any forums dedicated to making mods to Icewind Dale II. Could somebody point me in the right direction, either on which files to copy or a more appropriate place to post my request?

IWD2 isn't very popular as far as modding goes, but with all the people knowledgeable with the Infinity Engine, I expect someone will be able to help you out in our new forum. ;)