Open itunes and select your ipod. Under preferences, if you scroll down you can set your ipod to be also used as a storage drive, and select how much of the ipod is to be used for playable music and for file storage. Once you do this, your ipod will be a removable drive as well; as for whether or not Windows will be able to identify it, I have no idea, but I assume it would.
EDIT: Other options, ethernet will work fine.