how to change name of device in itunes

1. Connect your device and open iTunes.
2. Click the Device button in the upper right corner. (If viewing the iTunes Store, click the Library button in the upper-right corner first.)
   
3. Next to the picture of your device, double-click the name of your device.
   
4. Type the new name for your device and press Return on the keyboard.
5. Sync the device (press Sync in the bottom right corner of the screen).

Using an iOS device

1. On your device, tap Settings > General > About.
2. Tap the first line, which should display the name of your device.
   
3. Rename your device using the on-screen keyboard and tap Done.
   

http://support.apple.com/kb/HT3965

dont know the answer. Do you/

The answer is in the support document that paulcb posted.

when i click the link from Paulcb, it flashes the steps and then the page disappears.

You trying the link from a phone or the computer? Try from a computer if you are doing it from a phone. There is nothing wrong with the link, I just tried it.