Q: My ipod wont connect to itunes but my computer recognizes the device.

I would start htere:

iTunes for Windows XP: Troubleshooting unexpected quits, freezes, or launch issues

or

iTunes for Windows Vista or Windows 7: Troubleshooting unexpected quits, freezes, or launch issues

When you get iTunes to work by itself

Did you do everything here:

iOS: Device not recognized in iTunes for Windows

Including

Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP

or

Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7

New cable and different USB port?

Runs this and see if the results help with determine the cause

iTunes for Windows: Device Sync Tests

Try on another computer to help determine if computer or iPod problem