Sorry to hijack the thread but Thrush - you sound like the man who'll know the answer to a question I have.
I have my pc and ps3 connected as above. DVI and HDMI. I have a logitech z5500 surround sound attached to the computer and I want to get the sound from the PS3 through it while i'm gaming. How do i do it? I'm sure its prtty simple and if i read the instrucctions it will tell me, but why do things the easy way