iTunes library not syncing to iPod touch, please help!!!

Hi! I hesitated to upgrade to iOS 6.0.1 until all my songs from my iPod disappeared (but all the songs are still in iTunes library). I thought it was the problem with the software, so I upgraded my iPod to the current version iOS 6.0.1 and itunes to 10.7.

I am on a Window 7 OS. I tried to uninstall the iTunes software, and tried installing it again. I thought the Apple Mobile Device was disabled, but no. I tried restarting it from Administrative Tools. Not working as well. I don't want to restore to the manufacture version since I have so many things on my iPod. It would be great if you guys can suggest something other than restoring. Thank you so much!

Erica