hi, I think you will have trouble trying to do it.
basically, from win to win machine you need to connect them
manually set the local IP address so the two machines can talk
then enable sharing on the local network and then share the files you wish to transfer
but, this is win to win. I'm not sure if you'll be able to configure the shared folders on win/mac to be seen on another system since I don't have any experience with mac networking.
Oh, PS> you need a crossover cable for this, not a Lan cable.