I have 3 pc's I want to be able to transfer files to each other over my own network. Im not sure where to start. 2 of the pc's have windows 7 the other one is windows xp 32 pro. all on a WRT160N linksys router. Im looking for the easiest way drag and drop would be nice and easy or close to it. Im trying to transfer huge files than using a usb drive all the time.