I recently build a PC to use in our church so that we can display the PowerPoints, DVD's and stuff. The problem is that as soon as you connect the PC to the church's sound system, you starts to hear a very annoying noise, like static or interference of some kind. The soundcard is integrated, but I don't think it would be helpful to specify what brand is it; here's why. We tried 4 different desktop PC's on that line and still the same noise was showing. It's not that you can only hear the noise, you can also hear music and sounds, but the noise still remains. Now, here's the catch; we connected a Laptop to that same cable and voila, no noise!! I was like what the . . . :x: !!! Are Laptops that different from PC's? May be they have a special type of sound card? I dont know, what do you guys think? Do you believe that the problem could be in integrated sound cards? I mean, do you think that if I buy a separate card (like Sound Blaster or so) it would solve the problem? I just wanted your input because I don't have a bloody idea of how to solve this and I didn't want to spend $50 on a separate card and still not fix the problem. Anyways, thanks to anyone who can give me a suggestion.