While SP1 enables the use of both Firewire [IEEE1394] and USB 2.0 in Windows
XP, it does not make the Computer of such action. Computers built in the
last 2 1/2 years usually have at least USB 2.0 (sometimes Firewire)
capability built into the Motherboard or via PCI Card. Computers built
before then will have to enable either or both via a newly installed PCI
Card. Look at USB devices in the Device Manager. Either USB 2.0 and/or
Enhanced will appear by a USB 2.0 Device.