one suggestion - not sure if it's what you're looking for:
Use Target Mode.
Connect both computers with a firewire cable,
shut one down,
then restart it while pressing T on the keyboard. It will show up as a firewire disk on the other computer.
Transfer what you want to tranfer.
That's it.
It's bloody fast. I use it when I want to transfer 10+ gig of stuff, - USB keys, burning DVDs, Airport, 100Mps ethernet all take too long in these situations 😛
oxoxo tomato