[manasecret]

First off, any ol' HDMI-to-DVI cable will work for the video. I have a feeling you already know that. Also, for general knowledge I like to tell everyone -- do not pay anymore than about $7 on such a cable, make sure to buy online... Do not get ripped off at a store!

As for the audio, it depends on what you're trying to get your audio to. What speakers are you using, your computer's? How are you planning to hook up to those speakers -- through the microphone port on your computer, or something else?

The PS3 has an optical out for the audio, which is likely to be your best bet. But it will require converting to whatever input your speakers require (unless they have optical-in).