Did a bit more research on it......
http://www.everythingusb.com/usb2/faq.htm
Here's a quote from the site:
Which operating systems support USB 2.0?
Microsoft has released the official USB 2.0 driver for Windows XP and Windows 2000. The version is 5.1.2600. The software is available on-line at Windows Update website. (If you don't have a USB 2.0 card installed in your system, Windows Update won't list the USB 2.0 driver as an update.)
The software company is still considering USB 2.0 support for Windows ME, but it already has decided not to bring USB 2.0 to Windows 98 and Windows 98 SE. If you have Windows 98, you will have to rely on 3rd party USB 2.0 support from USB card manufacturer.
As for Mac users, Orange Micro. and KeySpan are providing USB 2.0 for MacOS X exclusively.
Looking at that, I was wrong and and USB 2.0 is supported in other M$ OS's. Looks like it's 3rd party support though if you're not using win2k or XP. Thanks for the heads up, Two Rails.