ISO? Bah, I write my cd's using a dd'ed reiserfs partition.
Although its kind of sad you can't use "mkreiserfs" to convert a directory into raw input file like "mkisofs".
Uh, do you mind having these scripts in ncurses? Then you could include a general newbie mounting guide! That also interprets /etc/fstab as well, or perhaps read comments to differentiate. It would save my non very command line friendly sibling a lot of trouble.