Yeah, what they all said. To add: you can always get full-quality video from a DVI output to an HDMI cable with an adapter because the electrical signals are the same. Beyond that, though, you have audio options. DVI outputs do not have to include audio signals on them. Many ATI video cards have a way to route the audio from your on-board or PCI card system through the video card and make it available at the DVI output. If you then get the right adapter (from ATI, or maybe elsewhere) those signals can be included in what the HDMI cable carries over to your monitor or HDTV. So you can either use this on ATI-based video cards to have both video and audio on the HDMI cable, or you can have video only on the HDMI cable and arrange other connections for audio out to your sound system.