When I connected my Ipod to computer it used to do simply nothing. It was not loading, not recognized by Itunes...
What I did was going to System -> Device Manager
There I had the Aplle Ipod USB Driver, but it was not properly installed or something like that, it had a yellow triangle with an exclamation mark.
I plugged out my Ipod, deleted the driver and plugged in the Ipod again.
So the computer automatically installed the needed driver (again, as it did, when I used my Ipod the first time) and everything works...
I guess this works also, if you have an Ipod, that needs a CD to install the driver from.