iTunes on laptop doesn't see my iPod

[prymsnap]

I'm in the process of retiring a Mac tower and moving operations over to a Macbook.

I regularly sync my calendar, contacts and bookmarks between the tower and the Macbook. in the past, I've synced the iPod via iTunes on the tower. Now I want to sync the iPod with those same functions (calendar, contacts, bookmarks) but via the laptop. when I attach the iPod to the laptop, iTunes on the laptop does not see it.

Do I need to somehow de-authorize the tower and authorize the laptop?

Thanks.