Ok, so my old, mid 2007 macbook had a firewire port that I plug my HD I use for time machine in (it can also be used as USB as well but I prefer it use firewire since I have uses for the two USB ports). Anyways, this new Macbook Pro I have has one too. Except... the connection is smaller on my new Macbook Pro... So I'm guessing there are different connection sizes and I need a new firewire cable? I think my current cable has the same size that both connects to the hard drive as to my old macbook. What labelling would I need to find to find a cable with the bigger connection on one side and the smaller connection on the other (Please don't tell me this means they are two different types of firewire or something and not compatible!!!).