I bought a X-Gamer soundblaster and everytime I moved the mouse I would get a very high pitch sound but the sound would be there even if I did not move the mouse. The computer would lock up to. No shareing the IRQ 5,that was ok. I bought a PCI Maxi ForTissimO sound card and works ok but there are a few compatible problems with the drivers and games. I also put my old ISA AWE sound card in and it works with all games but the sound is not all thAT great. I have a 733 P3 but I downloaded the creativelabs patch for that, still did not stop the noise.