My computer was recently stolen and I had to buy a new one. I am not trying to see if there is a way to take my contacts, songs, pictures that are on my iphone and put them onto my new computer.
Contacts should sync back to the new computer because iTunes will see the 'new' contacts on the phone and not your computer.
Contacts should sync back to the new computer because iTunes will see the 'new' contacts on the phone and not your computer.
For photos and music, you'd have to jailbreak your phone to get access to the filesystem.