USB / i-pod touch connection problems

Hi I live in UK and have a new 3 week old Toyota Prius T-Spirit. This is the top of the range model in UK with full touch screen navigation etc. When the car was delivered the option of USB / i-pod connection was forgotten to be fitted by the dealer. I just had that fitted on Friday and am now wondering what it is supposed to be! I have the latest gen i-pod 32gb touch all fully up-to-date with latest apple i-pod software and full up with songs. When I plug it in to the USB port it connects thru the cd changer function on the touch screen audio page - why on earth should it do that? Where is the i-pod tab? It plays music fine and charges OK, but no track names, album info or artist information is displayed. To listen to the i-pod you have to select disc 1 of the cd-changer option tab on the screen - how bizzare? Then you have the choice of three playlists or looking at 99 albums, but without the album / track / artist info it is useless. The manual that was supplied with it by Toyota is complete rubbish. I notice on this forum for US market you have USB tab on audio screen and i-pod seems to work better with search option menus etc.? I am wondering if anyone else in the UK / Europe has had same issues or in the UK I have purchased the expensive Toyota white elephant i-pod option, because like this I may of well used aux socket and the i-pod option is just a waste of time. For the money I was expecting full on i-pod integration. Any info would be of help. Thanks from a newbie (be gentle).