lipsyncing

I have created the .lip file and the .ogg file for the sound. I also have a simple mission set up with the .pbo and a sounds directory. Where should i put the files and what initialisation do i need to do to make a guy say something in the game. I've made a few missions lready but can't get this function to work. Its driving me mad! Can anyone help? Thanks

Thanks, figured it out just before i read your post. My description.ext was empty and i hadn't included the CfgSounds stuff. I've made the end scene from "Commando" played out in cinematic form. With the arnie face and everything, sweet. Thanks again