see inside
Resolution
To resolve this issue, install iTunes 10.2.2 or later. You can also install the latest version of iTunes by using Apple Software Update, which is part of iTunes 10.2:
- From the Start menu, choose All Programs and then choose Apple Software Update. Apple Software Update will connect to Apple's update servers and present a list of available Apple software updates.
- Place a checkmark next to the "iTunes + QuickTime" option (version 10.2.2 or later).
- Click the Install button.
- Follow the onscreen instructions to complete the installation.
http://support.apple.com/kb/TS3738