Logtech 5.1 Up Grade Logitech X-540 5.1 Surround Speaker System Question?

Logitech X-540 5.1 Surround Speaker System question? - logtech 5.1 up grade

I'm OK Logtech request an X-540 5.1 surround speaker system, my sound card is an X-Fi Xtreme Audio PCIe, but I know how is the configuration of surround sound that my first set of speakers, so if someone can you tell me how to configure it would be very grateful