I have an old 17'' iMac and need to transfer over a large amount of data to my new MB. The imac does not have USB2.0 but does have Firewire and the opposite for the new MB so Im not sure what my best bet is to go about this. I have heard about the use of ethernet but was told it would be complex. I think the old iMac has a dvd burner in it though. The only other option I see is to buy a USB/Firewire external drive . any help would be appreciated thanks!