buckinm asks: "Here's the problem: I have a Windows laptop that I use for work. When I'm at home though, I much rather use my Mac. Since we use Cisco's VPN client at work, I can't mount the drives on the PC from the Mac. What I'd like to know, is there any software out there that would make the PC act like a Firewire or USB drive? I'd want to be able to mount it read/write. I know I could do some sort of rsync of thing when not connected to the VPN, but that seems like too much trouble. I wouldn't be against writing something like that, if I could get some idea of what is required to listen / respond to traffic on the Firewire or USB ports."