How would I modify latency or reduce lag in my speakers?

So, I set up two sets of speakers to my computer, one jack in the front, the other in the back. The problem is that the two speakers aren't in sync. It sounds like an echo, or maybe like im at a concert.

I'm wondering if theres a program or something I can use to adjust the latency for my speakers. Or, maybe someone knows something I can do with the cords.

Thanks for taking your time to read this, I look forward to any help.
-Chadd990



Oh, and I'm using windows 7: 64 bit, on the mobo that comes factory with Hp s5306w inside the case of, and using the audio device for an HP a6109n
 
"one jack in the front, the other in the back"... Why have you connected them this way?

Aren't there 5 or 6 color coded audio jacks in the back of the computer? This is where most sound systems or speakers are connected and configured by the audio software...
 
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