New iPhone and laptop, old comp and iphone.transfer?

I have a new laptop and iPhone 5 and i want to transfer everything from iTunes on my old computer/old iPhone 3. What do I do?

You just upload everything to a server, then you download it from your new iPhone/Computer.

Firstly, you can plug your new iPhone 5 to the old computer and iTunes, restore the old backup to the new iPhone 5. When this is done, connect your new iPhone 5 with the new laptop and backup the data in iPhone 5 transferred from old computer to the new computer iTunes.

Do you catch me? ^_^

If still not understand, refer to this: http://www.windowspasswordsrecovery.com/articles/iphone-data/transfer-iphone-4-contacts-to-iphone-5.html
It may give you more inspiration.