Greetings! Well, this demo loads a half-life model in mdl format and it has a basic collision detection code. I wonder if someone can upgrade or improve the code to make it better. I can explain the whole process to create a custom half-life model with animations, multiple skins, bodyparts and texture effects. ( enryke01@hotmail.com ) You can download the last demo here: http://opengl.i8.com/ Or in the NeHe site: nehe.gamedev.net in the downloads section, "M" letter, as "Mdl Model Viewer" this' an older version. Any help is welcome, I hope you like this little project, Best Regards. -Enryke-