you cannot use Target disk mode and mount the Mac on the Windows PC, this will not work period. If you are going to use firewire, which is not what i would do, you need to use IP over Firewire which i know nothing about but its been discussed around here somewhere before. just use any ethernet cable you have or the cheapest one you can buy. who cares if you only get 100mb because thats what the PC has, unless you planning on sitting there and watching every kb transfer 100mb will do. just pop in the ethernet cables, assign the pc and mac static ip's, turn on Windows File Sharing, and command k to PC. Start transfer, open beer, turn on TV and wait a little bit. simple, easy.