ipod help

[alison123]

Ive just got a new laptop due to the other crashing and dying on me . Itunes now does not show any of my tunes in the playlists unless i actually plug the ipod in. Ive just got a new 3gs iphone which i now cannot transer the tunes onto as they arnt in the list (they are on my ipod and show up when its plugged in but as soon as it take out the cable they disappear) Any help would be greatly appreciated.