Last Step
Copy file named openGL32 from MesaFX package main folder to game folder. For example if you want use MesaFX for Quake 3 Arena you must copy openGL32 library to Quake 3 Arena folder, tipically located at C:\Program Files\Quake 3 Arena. However, we suggest making backup copy before overwriting original file.
Now your game is MesaFX ready and you can run it.