I have just installed a Creative SB Live! 5.1 Digital soundcard in my PC. There is sound, but also noise - combinations of scratching, popping, squeaks and crackling. The noise varies in intensity, and seems to follow PC activity level. My guess is that this is caused by interference from other components within the PC, like maybe the video card. I have moved these two cards as far away from one another as possible, but that helped just a little. I'm thinking about making some shielding devices for one or both cards, but will it help? Am I on the right track at all? Could the soundcard be faulty? Any tips or comments are welcome.