Help re Xbox 360 monitor setup

[remal]

I had my 360 working on my non HD 36" TV. But now have fitted it to my 20" PC monitor. I just bought the Logic3 cable which works great and I am amazed how much improvment it had made to the picture.

But I have no sound as i have 2 RCA connections but not sure were I need to put them.

Any help please. I am using the creative 7.1 SS on my PC
thanks

[remal]

I have creative 9000 series. I was told the best way would be to get an adaptor to unplug my speakers from the pc then into the xbox connectors.

[remal]

many thnaks. I will look into that.

cheers