Tom,
Most of the guys that reported problems installing the USB driver didn't follow the instructions in the instruction manual. It's very important to go step by step, exactly the way the installation guide says. If not, the driver will not install properly.
Using Windows, click Start, Search, Files & Folders and type in the driver name. You may find that it is in your computer, but not functional because of the way it was installed. If this is the case, uninstall the driver, shut down the computer, then reboot and try installing it again.
Good Luck,
Gary
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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)