Ipod nano "unknown device"

I have just bought an ipod nano 4.0GB, and my computer doesn't recognize it, it says "One of the USB devices attached to this computer has malfunctioned, and windowns does not recognize it."..In my device manager it shows as "unknown device", and no driver is installed...for what I've been researching, it seems to be happening a lot with Dell computers... I tried everything Apple support site says, and still no change, I even tried what other postings say, like reseting the ipod pressing the center whell and menu button...or even turning it to disk mode, I get the message, OK to disconnect...
Can anyone help?
Appreciate it

This is a comman error with many Windows XP Users. I myself had encountered it but fixed it with ease . You have to Reset your ipod and Get the Latest Ipod UPDater Software.
To Reset your IPOD_
Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)
Press and hold the Menu and Select buttons until the Apple logo appears, about 6 to 10 seconds. You may need to repeat this step.
Tip: If you are having difficulty resetting your iPod, set it on a flat surface. Make sure the finger pressing the Select button is not touching any part of the click wheel. Also make sure that you are pressing the Menu button toward the outside of the click wheel, and not near the center.
If the above steps did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn't set to go to sleep.
After that Plug it in to the computer with the LATEST IPOD UPdATER SOFTWAre from this site.

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