Hey, I'm having a problem with my soundcard, and I believe it's because it's on IRQ 18 - this is a virtual IRQ as well as a shared IRQ (with a USB controller). If I go to the properites of the sound card in device manager, I cannot set my IRQ manually. The option is disabled. I turned off automatic IRQ assignment in BIOS, restarted XP Pro in safe mode, and still cannot change the IRQ, but it changed to IRQ 5. Restarting in normal mode, it's back to 18. If only I could make it stick at that IRQ 5 - or 7 - I have a feeling my sound would be fixed... any advice would be appreciated.