not sure what a samba box is but try using rcp of ftp, but you might have to type xhost+ of the unix box..

If I am way off, I would try to just snake through a few servers who have ftp protocol set up. do you have a share directory. Might try setting up the share where you drop a fie in one server and it appears on another, but this might be just sun related... sorry if i was some space but I am stomped on my trouble good luck