Since the new Macbooks don’t offer a firewire port, you’ll need to use a network connection to transfer your data from an old Mac to your new Macbook.
Apple has made the process very simple though: the first time you boot up your new machine, you’ll be asked to pick another Mac on your network. I usually connect to my network via wireless LAN, which is a bit slow for large amounts of data, so I just connected my old and new Macbook via an ethernet cable.
