GemRB is not really a Mod. It is an Open-Source Clone that runs Infinity Engine Games such as Baldur's Gate, IceWind Dale, Planescape: Torment... GemRB actually works on Linux/Unix Systems and Windows, we're searching for a Mac Developer to port it to MacOS X :) GemRB will have many improvements, and it is expecially designed for Modders, featuring new In-Game Scripting commands, a Python GUI Scripting, and a 'nothing is hardcoded' feature that makes GemRB the more versatile RPG Game Engine on the Net :D This is totally free!!!