I've read that if I just plug his laptop into mine with a usb cable and boot it holding down the "T" key it should make his laptop appear as an external drive on my computer. I think that would help as well.
That's Firewire Target mode, and it only works via Firewire, not USB. It's incredibly useful, and I've used it many times.
Just to make clear, turn off his laptop, use a firewire cable to connect the two laptops, (yours can be still on) hold down the T key on his laptop, and start it up. After a couple of minutes it should appear as a firewire external drive on your laptop.
Here's a pic of what the screen looks like on a mac booted in firewire target mode:
http://en.wikipedia.org/wiki/Target_Disk_Mode
Is your laptop a mac too? Windows machines may have trouble reading the OSX HFS+ disk format.
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