I don't know of a solution other than having the devices shipped back to you to upgrade.
It's not a limitation of the HID driver, it's a limitation of the USB spec. The reason is to force devices that need more bandwidth to use a higher speed so they don't hog the bus with large amounts of low-speed traffic.
Thanks anyway Jan. By the way, I tried Windows XP mode and of course, Windows XP mode doesn't allow HID devices to be connected to it. Oy vey.