Well... I've solved my bone problem. It turns out it was the max script file I was using to export the .max -> .smd and everything I was doing [minus the max script export thing] was correct (for the most part). After manually exporting, everything works fine. So, I've gone through and made some animations and such (pretty much exactly like Valve's floor turret) and all I have to do now is add code to make the Sentry Gun do what it was born to do.