CREATIVE NOMAD Zen XTRA - Manual (Page 94)

FAQs and Troubleshooting C-4
Windows XP tells me that the software for the player is not certified.
What do I do?
At the time of this product's release, Microsoft strongly encouraged
companies to submit their hardware solutions for certification. If a hardware
device driver is not submitted, or does not qualify, for Microsoft certification, a
warning message similar to the one below appears.
You may see this message when installing this driver or update. If you do,
you may choose to click the Continue Anyway button. Creative has tested
this driver or update on Windows XP, and it does not impair or destabilize
your computer.