If that doesn't work. Check your manufacturers website for updated drivers. Download the latest drivers.
Uninstall the device from device manager.
Download Revo uninstaller and run it to see if your device is shown in the list. If so use Revo to remove it.
Shut down your PC. Remove the firewire card.
Restart your PC. Shutdown again after rebooting and making sure that no 1394 anything is shown (check network connections)
Re-install your card in a different slot if possible. Restart. Do not allow automatic installation. Install using the new drivers you downloaded.
Revo Uninstaller rules. Good suggestion. I used Your Uninstaller for a long time, until I found Revo Uninstaller.
Did all of that. I don’t know how to stop XP from automatically loading the drivers. There are no drivers available from Canon for the camcorder.