It might also help to try moving the card to a different slot. This should begin with removing it from your device manager, then shut the system down, and pull the card. It might help to boot the system once without the card installed. This whole thing is to get Windows to assign that card a different IRQ and memory addresses. Creative Labs cards have a tradition of not co-operating with other hardware. But both Windows XP and Vista will put it on an IRQ that is being shared with other devices every time.
Last resort might be to change some settings in BIOS. Just try the other stuff first.
