Thousands of others have posted about this problem on this and other websites.
When I plug-in my iPod, Windows provides a message that it is an "unrecognized USB device". (This happens in XP and Vista.) Device Manager shows lists it as an Unrecognized Device with no driver. I have spent at least 10 hours reading web posts from users with the same problem and trying possible fixes. None has worked.
At the local Apple store the reps said that they would provide a 50% discount on a replacement. This policy seems unfair to customers. The thousands of posts suggest the product is defective. How many other thousands of customers paid for a replacement without posting? Now that I know of the defect, why would I ever buy another one?