Sup, I recently tried the Diamond Multimedia MX400 sound card on my speaker system and i could get only get 2 speakers working with the sub. Before this, i tried another sound card that had 4.1 support, but the same thing happened. I tried a few nicks here and there, and did changes to the speaker/sound setup in XP, setting it to Surround Sound, instead of desktop or whatever, and still no 4.1 sound!. Im getting very frustrated as to what to do next, could someone please help me!! Any response would be greatly appreciated!!