Hi, I have not been here in a while.  I have been busy with school, but decided to take a break for a quarter.

My question:

I am trying to hook up a surround sound system for my computer.  I do not have a surround sound system actually, but a collection of home made, and salvaged speakers with built in amplification.  

What I need to know is what I need to do in order to have a center/sub output control the center and sub separately.  I have tried to splice the red, white, and ground wires from the headphone jack style plug for a pair of logitec computer speakers with an RCA style cord which is plugged into the sub.  

The result is less than satisfactory since I only get sound from one Logitec speaker, the right one in fact.  I do get sound in the sub, but what should I do to get sound from both Logitec speakers?  Is there a way to do this? Is the sound card just running it as if it were all MONO?

Thanks for any input.

HD