Hi. I used to work on XP Home with this particular subtitling application. I bought a new computer, installed the very same software and proceeded to work. The subtitle editor seems to work all right (text), however when I try to open a video file the error message is: "No overlay mixer available. Check video adaptor and DirectX installation." I am practically computer illiterate. I wrote to the maker of the software, but to no avail. I don't even know if it's a problem with Vista or the software, or what. Do I need to download a DirectX update? Please help, I am lost here. Thanks in advance.