I've got a win7 / groovymame setup with an arcade monitor where mala is being displayed at a 640x480 interlaced resolution. Everything seems to be fine, except that I can't get images to show up at all. I'm using a fresh install with the default layout. I did the same thing recently on a different machine with an lcd at 1280x1024 and images showed up just fine. I've tried messing with a lot of mala's configuration, but still haven't gotten it to work. Is there some trick to it?