Used ipod wont recognise in itunes

1. Reset or restore your iPod for a try, this can fix many general iPod problems. 2. You may try this iTunes alternative, I always use it to upload music and video to my iPod once my iTunes can't recognize my iPod, my friends recommend it to me, it's safe and works pretty well, you can also use it to copy music and video from ipod to computer for backup, it's useful when you lost your iTunes library. http://www.ipod-transfer-copy.com/ipod-iphone-to-computer-transfer-cucusoft.html 3. Upgrade or re-install iTunes for a try, this is the method that I got from Apple technical support. Hope it helps. Contact me if you have any other question.

I think the iPod nano uses windows media player to load.

Hi,
If your computer is recognising other ipods and not yours there is a possibility of somethin being wrong with your ipod.You can always get it replaced.Or else maybe you should check the USB cable you are using to conect.
Finally try your ipod on another computer.
This oughta help you arrive at a conclusion.
and if i helped u solve ur problem in any way...please help me by clicking on the fixya rating.. 
thank you.

ipods are only designed for itunes so windows shouldn't recognise media player, any way, the new software for ipod touches is greater, meaning your computer/windows media player wont recognise it, only itunes will.
Cheers

Have you tried resetting it? Press the center (Select) button and the Menu button at the same time and hold for at least 10 seconds or until you see it reset.

hope this may help;

Regards,
VOTIT

Try this: (I found it here: http://forums.macrumors.com/showthread.php?t=199220 )
Go to iTunes Preferences and in the iPod section, ensure that Enable Disk Usage is checked.

maybe the you either need two get a new verison of itunes my ipod once wasnt regomize and it was because i needed 2 upgrade the itunes

You should try connecting the iPod to a different computer and see if it works. If it doesn't work, you should try connecting with a different USB cable if you can get a hold of one. One of the two should be your problem (a defective USB port on the computer or a defective iPod USB cable).

If you install the itunes version 7.5 that you downloaded, you wont lose your music library. It is a separate file from the programs installation files. You don't need to uninstall the previous version, the new one will install on top of it.

try reformatting the ipod. that might reset it.