Windows XP SP3 does not recognize iPod Classic

I have an older computer with Windows XP SP3 and iTunes 10.2.2. iTunes does not recognize (load) my iPod Classic (160Gb model) when I plug it in. The iPod lights up and charges fine, but it does not appear in the left menu bar in iTunes.

I have an old iPod Shuffle that loads into iTunes just fine.

I have tried a number of remedies:

• Updated the computer to XP Service Pack 3.
• Completely uninstalled and reinstalled iTunes twice.
• Reset the iPod Classic several times.
• Tried plugging the iPod into different USB ports on the computer.

My music library is on an external drive, so I was able to borrow a computer (Win7) and use it to load the music into my iPod. But this isn't a permanent solution.

Does anyone know of a potential fix that I haven't considered?

Thanks in advance.