When you mention PCI slots, are you referring to conventional PCI or PCI express? Conventional PCI is being displaced by PCI express, so I would not recommend using a conventional PCI sound card; a PCI express sound card is likely to perform better, and purchasing such a device shall help to support that interface standard (my current sound card uses PCIe, and most manufacturers have now switched to using that interfaces exclusively).
Are you joking, I hope? Because this hardly seems to be the type of issue for which a person would contact the police.