A Good Setting for gaming with an X-Fi?

I just bought a Creative Sound Blaster X-Fi Xtreme Gamer, and i was wandering if anyone knew of a good setting in it which really helps. I play an online game called America's Army Special Forces and half the game is hearing your enemies approaching from a distance. And im not all that smart with computers so i was just curious if anyone else who has this card has figured out a good setting for it which will really help