Hi. I'm using Poser 5. I read in the manual that alpha channel backgrounds are possible, but for the life of me, I cannot figure out how to do it. I just tried rendering to AVI with the background over "background color", over "black" and over "Current Background Shader". None of these are providing an alpha channel background. Can someone tell me how to get an alpha channel background when creating an AVI? I know I can do it with an PNG export, but I'd like to do it with an AVI. Thanks.