Creative Sound Blaster... help?

I have a creative sound blaster vx 5.1 card and creative T 6100 speakers.. For some reason the rear speakers dont work while playing 5.1 channel content.. It works only when eax is enabled in the creative control panel.. I dnt want to turn on eax. Pls help me find a solution
 
It might be slightly different for whichever OS you're using (XP or 7) but there should be an "Audio Control Panel" inside the main system control panel; In the Audio Control Panel change the "Speaker Configuration" to 5.1.

That should solve the problem.
 
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