eeeh, ok. try this link. i have discussed similar things there. hope it helps.
i frequently use sftp between two computers using knoppix, it works well and i have used knoppix and an external CDburner for the task of backup more times than i can remember (i use cdrecord, not the easiest for a beginner).
EDIT the actual link might help i guess. links actually as there is two of them.
http://www.knoppix.net/forum/viewtopic.php?t=8739
http://www.knoppix.net/forum/viewtopic.php?t=8740