Hello! Still trying to figure out my Mac. Need assistance. I bought a LaCie external hard drive for my MacBook since I have a model foam 2008 (the one with the removable battery). Need space on my MacBook bad. 3 GB left on drive. Since I am still a newbe I put it off as long as I could because I don't understand what to do. The guy at best buy was a Mac guy and he said I needed a $30 FireWire 800/400 9 pin to 6 pin cable. But when I opened up the drive to finally do it last night there were 2 cables included one 800 to 800 and one 400 to 400. My MacBook has the 400 slot. Do I need the 800/400 9 pin to 6 pin cable? Would it increase the speed over the 400 to 400 cable included with the drive? Thanks for any help. I feel so overwhelmed attempting this by myself.